Products
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POMEX Borosilicate Glass Separatory Funnel with Glass Stopper & Glass Stopcock Laboratory Liquid Separation and Extraction Funnel 60 mL to 2000 mL
This borosilicate glass separatory funnel is designed for dependable liquid-liquid extraction, separation, and purification in the laboratory. It comes with a matching glass stopper and a glass stopcock, providing a complete, chemically resistant setup for routine lab procedures. The conical shape allows immiscible liquids to separate cleanly, while the clear glass body makes it easy to observe the liquid interface. Available in a wide range of capacities from 60 mL to 2000 mL. Key Features: Borosilicate Glass Construction: Made from quality borosilicate glass for excellent chemical durability, clarity, and thermal shock resistance. Glass Stopper Included: Matching ground glass stopper helps seal the top opening and reduce contamination risk. Glass Stopcock: Provides precise control of liquid flow and is resistant to many laboratory chemicals. May require a thin layer of stopcock grease for smooth operation and a reliable seal. Standard Taper Joint: Designed with a standard taper joint for compatibility with common laboratory glassware. Please confirm joint size before ordering. Conical / Pear Shape: Promotes efficient separation of immiscible liquids and smooth draining of the lower layer. Clear Visibility: Transparent glass allows easy observation of the liquid interface during extraction and separation. Chemical & Thermal Resistant: Suitable for use with most acids, bases, and organic solvents. Not recommended for hydrofluoric acid (HF). Reusable & Easy to Clean: Can be cleaned with mild laboratory detergent and distilled water. Autoclavable when properly disassembled. Wide Capacity Range: Available from 60 mL to 2000 mL to suit different laboratory volumes and applications.
$29.99 - $180.00
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SYNTHWARE Borosilicate Glass Single Neck Pear-Shaped Lab Recovery Flask Heavy Wall Rotary Evaporator Flask 29/42 Joint
Laboratory-Grade Borosilicate Glass 3.3: High chemical durability and thermal stability for routine and demanding laboratory applications. Heavy Wall Construction: Reinforced glass walls designed to withstand vacuum conditions and mechanical stress during rotary evaporation. Pear-Shaped Design: Rounded body with tapered neck maximizes surface area for efficient evaporation and uniform heating. Single Neck Configuration: Simplifies setup and reduces the risk of cross-contamination. 29/42 Standard Taper Outer Joint: Precision-ground conical interface ensures a secure, leak-free fit with rotary evaporator inner joints and compatible glassware. Multiple Capacity Options: Available in 100 ml, 200 ml, 250 ml, and 500 ml. Excellent Thermal Shock Resistance: Withstands typical laboratory temperature changes without cracking. Chemical Resistance: Resists most common acids, bases, solvents, and reagents under normal laboratory conditions. Clear Borosilicate Construction: Allows easy visual monitoring of sample volume and evaporation progress. Uniform Wall Thickness: Promotes even heating and reduces stress points for enhanced durability. Reusable and Long-Lasting: Designed for repeated use with proper handling and care. Versatile Applications: Ideal for rotary evaporation, solvent recovery, distillation, reflux, extraction, and general chemistry procedures.
$25.99 - $199.00
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SYNTHWARE Borosilicate Glass Single Neck Pear-Shaped Recovery Flask 24/40 Standard Taper Outer Joint
This heavy-wall pear-shaped recovery flask is specifically designed for use with rotary evaporators and other vacuum applications. Manufactured from high-quality borosilicate glass 3.3, it offers excellent chemical resistance, thermal shock resistance, and optical clarity. The pear-shaped body provides a large surface area for efficient evaporation and uniform heat distribution, while the heavy wall construction ensures reliable performance under vacuum. The ST24/40 standard taper outer joint provides a secure, leak-free connection to rotary evaporator inner joints, condensers, and other compatible glassware. Key Features Laboratory-Grade Borosilicate Glass 3.3: High chemical durability and thermal stability for routine and demanding laboratory applications. Heavy Wall Construction: Reinforced glass walls designed to withstand vacuum conditions and mechanical stress during rotary evaporation. Pear-Shaped Design: Rounded body with tapered neck maximizes surface area for efficient evaporation and uniform heating. Single Neck Configuration: Simplifies setup and reduces the risk of cross-contamination. 24/40 Standard Taper Outer Joint: Precision-ground conical interface ensures a secure, leak-free fit with rotary evaporator inner joints and compatible glassware. Multiple Capacity Options: Available in 50 ml, 100 ml, 200 ml, 250 ml, and 500 ml; other sizes may be available upon request. Excellent Thermal Shock Resistance: Withstands typical laboratory temperature changes without cracking. Chemical Resistance: Resists most common acids, bases, solvents, and reagents under normal laboratory conditions. Clear Borosilicate Construction: Allows easy visual monitoring of sample volume and evaporation progress. Versatile Applications: Ideal for rotary evaporation, solvent recovery, distillation, reflux, extraction, and general chemistry procedures.
$22.99 - $199.00
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POMEX Borosilicate Glass Two Neck Round Bottom Flask RBF 24/40 Center 19/22 Side Joints
Matched Joint Sizes: Center joint is 24/40, and side joint is 19/22. Simplifying setup and maximizing compatibility with existing glassware. Multi-Port Flexibility: Two necks allow simultaneous use of a condenser, thermometer, addition funnel, or gas inlet in a single flask. Secure Dual-Joint Sealing: Precision-ground joints provide tight, leak-resistant connections for reliable, contamination-free results. Superior Thermal Shock Resistance: Borosilicate Glass 3.3 withstands rapid temperature changes and direct heating without cracking. Excellent Chemical Durability: Inert surface resists attack from most acids, bases, and solvents, ensuring sample integrity. Even Heating & Efficient Mixing: Round bottom design promotes uniform heat distribution and smooth boiling for consistent results. Clear Visual Monitoring: Transparent glass enables easy observation of reaction progress, boiling, and volume levels. Durable & Reusable: Non-porous, smooth surface is easy to clean and built for repeated laboratory use.
$29.90 - $120.00
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POMEX Borosilicate Glass Two Neck Round Bottom Flask RBF 29/42 Taper Outer Joint
Taper Outer Joints: Center 29/42 joint, side necks are 24/40 or 29/42 joints, simplifying setup and maximizing compatibility with existing glassware. Precision-Ground Joints: Accurately ground to ensure tight, leak-resistant seals with compatible components. Borosilicate Glass 3.3 Construction: Low expansion coefficient provides superior thermal shock resistance, suitable for direct heating, cooling, and autoclave sterilization. Uniform Round Bottom Geometry: Spherical body promotes even heat distribution and controlled boiling for efficient distillation and reflux. Chemical Inertness: Resistant to most acids, bases, and organic solvents, preserving sample purity and analytical accuracy. Optical Clarity: Transparent glass allows clear visual monitoring of reactions, boiling dynamics, and sample volume.
$28.99 - $120.99
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POMEX Borosilicate Single Neck Glass Heavy Wall Rotary Evaporator Recovery Flask With 14/20 Outer Joint 25ml 50ml 10ml
Heavy Wall Recovery Flask – Borosilicate Glass Single Neck Flask with14/20 Taper Outer Joint for Rotary Evaporators & Reaction Product Recovery Product Highlights: Heavy Wall Construction: Thick, durable glass walls provide added strength and safety for demanding laboratory applications. Standard Taper Outer Joint: Compatible with standard taper inner joint adapters, condensers, and rotary evaporator setups. Easy Product Recovery: Flask shape allows total contents to be accessed with a spatula or policeman for efficient sample retrieval. Rotary Evaporator Ready: Even wall thickness and minimum runout make this flask ideal for use with rotary evaporators. Heating Mantle Compatible: Lower spherical portion fits standard heating mantles for controlled heating. Premium Borosilicate Glass: Manufactured from low-extractable borosilicate glass conforming to USP Type I and ASTM E438 Type I, Class A requirements. Clear Visibility: Transparent glass allows easy observation of samples during evaporation and recovery.
$24.95 - $190.00
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SYNTHWARE Buchner Funnel Vacuum Filtration 29/42 Inner Joint Sand Core 150ml Filter Funnel
This laboratory vacuum filtration and distillation apparatus is designed for precise, efficient solid-liquid separation, solvent filtration, degassing, and distillation. The set features a high-quality borosilicate glass Buchner funnel with a sintered sand core filter plate, available in G2, G3, or G4 porosity. The funnel uses a 29/42 inner joint, making it compatible with standard 29/42 outer joint receiving flasks and vacuum adapters. This larger joint size is ideal for setups requiring higher flow rates and larger capacity glassware. Key Features G2 / G3 / G4 Sand Core Options: Choose the porosity that matches your application — G2 for coarser particles and faster flow, G3 for routine lab filtration, and G4 for fine precipitates and higher clarity. 29/42 Inner Joint: Standard taper 29/42 inner joint ensures a secure, airtight fit with 29/42 outer joint adapters, flasks, and distillation heads. The larger joint size offers improved flow and stability for larger-scale operations. High-Quality Borosilicate Glass 3.3: Excellent thermal shock resistance, chemical inertness, and durability for repeated laboratory use. Reusable Sintered Glass Filter Plate: No filter paper required. The sand core disc is permanent, cleanable, and autoclavable. Complete Vacuum Filtration & Distillation Setup: Includes a Buchner funnel, heavy-wall Erlenmeyer suction flask with side arm, and vacuum take-off/distillation adapter. Airtight & Stable: Ground glass joints and thick-wall flask design help maintain vacuum pressure and improve safety during operation. Easy to Clean & Sterilize: Sand core can be rinsed with suitable solvents and autoclaved. Ideal for repeated laboratory workflows. Funnel Capacity: 150ml
$32.00 - $39.00
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POMEX Claisen Distillation Connecting Adapter Y-Shaped 3-Way Claisen Distilling Adapter 14/20 19/22 24/40 29/42 Joints Chemistry Apparatus Lab Glassware
Professional-grade Claisen distillation connecting adapter, designed to connect multiple components in distillation and reaction setups. This Y-shaped 3-way Claisen adapter allows simultaneous addition of reagents, temperature monitoring, and distillation in a single compact assembly. Manufactured from high-quality Borosilicate 3.3 glass for superior durability, chemical resistance, and thermal shock resistance. Available with standard taper joints in 14/20, 19/22, 24/40, or 29/42 sizes to match your existing laboratory glassware. Ideal for organic chemistry, synthesis, and research laboratories. Key Features: Y-Shaped Design: Classic Claisen configuration with three-way connection for versatile distillation and reaction setups. 3-Way Claisen Adapter: Allows connection of multiple apparatus components simultaneously, including condensers, thermometers, addition funnels, and receiving flasks. Multiple Joint Sizes Available: Choose from 14/20, 19/22, 24/40, or 29/42 standard taper joints to match your existing glassware. Standard Taper Joints: Precision-ground joints ensure a secure, leak-proof fit with condensers, thermometers, addition funnels, and receiving flasks. Distillation Connecting: Specifically designed for connecting flask, distillation head, and condenser in distillation assemblies. Multi-Purpose Functionality: Enables simultaneous reagent addition, temperature monitoring, and distillation in one compact setup. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance, high chemical durability, and outstanding optical clarity. Heavy Wall Construction: Thicker glass walls deliver increased mechanical strength and extended service life. Precision-Ground Joints: Smooth, accurately tapered joints ensure easy connection and removal without seizing. Chemical Resistance: Resistant to most acids, bases, and organic solvents for long-term reliability. Thermal Shock Resistance: Withstands typical laboratory temperature fluctuations when used correctly. Autoclavable: Safe for sterilization by autoclaving. Clear Glass: Allows easy observation of vapor and liquid flow during distillation. Compact Design: Saves bench space while providing maximum functionality for complex setups. Durable & Reusable: Designed for repeated use, reducing replacement costs and ensuring long-term value. Package Includes: Claisen Distillation Connecting Adapter.
$24.95 - $90.00
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POMEX Conical Separatory Funnel Heavy Wall Borosilicate Glass Separating Funnel with PTFE Stopcock 19/22 Joint
Material & Construction: Made from heavy-wall borosilicate glass. This provides excellent thermal shock resistance and chemical durability. The heavy-wall design adds mechanical strength, and some models feature reinforced glass around the stopcock for extra durability. Joint: A taper 19/22 ground glass joint ensures a secure, leak-resistant fit with other standard lab glassware, such as flasks and adapters. Stopcock: The PTFE (Polytetrafluoroethylene) stopcock is a key feature. PTFE is highly resistant to chemicals and temperature extremes, and it eliminates the need for grease, preventing sample contamination. It also prevents the stopcock from freezing or seizing, a common issue with glass-on-glass stopcocks. Shape & Capacity: The conical (pear-shaped) design promotes efficient and clean separation of immiscible liquids. Available in a range of capacities, including 50 mL, 60 mL, 100 ml, 125 mL, and 150 mL, to suit different volumes of work.
$37.99 - $160.00
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SYNTHWARE Constant pressure dropping funnel graduated Glass stopcock pressure equalizing dropping funnel 19/22 Joint
Ensure smooth, accurate, and controlled dropwise addition of reagents under closed or inert conditions with our Constant Pressure Graduated Dropping Funnel. Crafted from high-quality borosilicate 3.3 glass, this funnel features a precision ground glass stopcock and a 19/22 standard taper joint for secure, leak-resistant connections. The pressure-equalizing side arm balances pressure between the funnel and the reaction vessel, allowing consistent dropwise flow without the need for repeated venting—ideal for air-sensitive and moisture-sensitive reactions. The clear glass body is graduated with easy-to-read volume markings, enabling precise monitoring of liquid addition throughout your experiment. Key Features & Benefits: Constant Pressure (Equalizing) Design: The integral side arm equalizes pressure between the funnel and the reaction flask, ensuring steady dropwise addition and preventing backpressure or vacuum issues. Ground Glass Stopcock: Provides smooth, precise flow control. Chemically resistant and ideal for applications where a glass stopcock is preferred or required. Interchangeable for easy replacement and maintenance. Graduated Body: Clear volume markings on the borosilicate glass allow for accurate monitoring of liquid dispensed and remaining. 19/22 Standard Taper Joint: Ensures a tight, leak-resistant fit with 19/22 compatible flasks, adapters, and stoppers. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance and chemical durability for long service life. Multiple Capacity Options: Choose from 25ml, 60ml, 125ml, or 250ml to suit your specific reaction scale. Autoclavable: Suitable for standard sterilization procedures. Package Includes: Constant Pressure Graduated Dropping Funnel with Glass Stopcock and 19/22 Joint.
$47.95 - $160.00
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SHUNIU Glass Beaker Laboratory Glassware Low Form Griffin 3.3 Borosilicate Printed Graduation
Elevate your laboratory precision with our premium high borosilicate glass beaker, engineered to meet rigorous experimental demands. Constructed from high-quality borosilicate 3.3 glass, this beaker provides exceptional thermal shock resistance, ensuring structural integrity during rapid temperature transitions. The superior material composition prevents cracking and breaking, enabling reliable performance under extreme thermal conditions—from direct hot plate heating to transitions between freezer and heated environments. Crystal-clear transparency allows for optimal content visibility and accurate measurement. Designed for durability and uncompromising quality, this beaker is an essential vessel for a wide range of laboratory applications.
$12.95 - $190.00
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POMEX Glass Conical Separation Funnel with PTFE Stopcock Lab Separating Funnel with 29/42 Joint
Premium Borosilicate Glass: Made from high-quality borosilicate glass 3.3 for excellent chemical durability, clarity, and thermal shock resistance. Heavy-Wall Construction: Thick, durable glass body provides added mechanical strength and long service life in demanding lab environments. 29/42 Taper Joint: Compatible with standard lab glassware, stoppers, and adapters for a secure, leak-resistant fit. PTFE Stopcock: Chemically resistant PTFE stopcock eliminates the need for grease, preventing sample contamination and stopping seizing or freezing. Conical / Pear Shape: Promotes efficient phase separation and easy draining of the lower layer. Clear Visibility: Transparent glass allows easy observation of the liquid interface and phase separation. Chemical & Thermal Resistant: Suitable for use with most acids, bases, and organic solvents. Multiple Capacity Options: Available in 250 mL, 500 mL, 1000 mL, and 2000 mL to suit different working volumes.
$49.95 - $180.00
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SYNTHWARE Glass Constant Pressure Graduated Addition Funnel with Glass Stopcock 14/20 Taper Joint
Achieve accurate, controlled dropwise addition of reagents under closed or inert conditions with our Glass Constant Pressure Graduated Addition Funnel. Crafted from high-quality borosilicate 3.3 glass, this funnel features a ground glass stopcock and a 14/20 standard taper joint for secure, leak-resistant connections. The pressure-equalizing side arm equalizes pressure between the funnel and the reaction vessel, ensuring smooth, consistent flow without the need for repeated venting—ideal for air-sensitive and moisture-sensitive reactions. The clear glass body is graduated with easy-to-read volume markings, allowing precise monitoring of liquid addition. Available in 10ml, 25ml, 60ml and 125ml capacities, this addition funnel is an excellent choice for organic synthesis, pharmaceutical research, and any laboratory procedure requiring controlled reagent delivery, especially where a glass stopcock is preferred over PTFE for compatibility or traditional setups. Key Features & Benefits: Constant Pressure (Equalizing) Design: The integral side arm balances pressure between the funnel and the reaction flask, enabling steady dropwise addition and preventing backpressure or vacuum issues. Ground Glass Stopcock: Provides smooth, precise flow control. Chemically resistant and ideal for applications where PTFE may not be suitable. Interchangeable for easy replacement. Graduated Body: Clear volume markings on the borosilicate glass allow for accurate monitoring of liquid dispensed and remaining. 14/20 Standard Taper Joint: Ensures a tight, leak-resistant fit with 14/20 compatible flasks, adapters, and stoppers. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance and chemical durability for long service life. Multiple Capacity Options: Choose from 10ml, 25ml, 60ml or 125ml to suit your specific reaction scale. Autoclavable: Suitable for standard sterilization procedures.
$45.99 - $150.00
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POMEX Glass Laboratory Vigreux Distillation Column Borosilicate Fractional Column 19/22 Joints 100mm to 600mm
Laboratory-Grade Borosilicate Glass 3.3: High chemical durability and thermal stability for routine and demanding laboratory applications. Vigreux Indentation Design: Internal points increase surface area for improved fractional distillation and separation efficiency. 19/22 Standard Taper Joints: Precision-ground conical joints at both ends ensure secure, leak-free connections with compatible glassware. Column Length: 100mm, 200mm, 250mm, 300mm, 400mm, 500mm, and 600mm. Excellent Thermal Shock Resistance: Withstands typical laboratory temperature changes without cracking. Chemical Resistance: Resists most common acids, bases, solvents, and reagents under normal laboratory conditions. Clear Borosilicate Construction: Allows easy visual monitoring of reflux and distillation progress. Uniform Wall Thickness: Promotes even heating and reduces stress points for enhanced durability. Reusable and Long-Lasting: Designed for repeated use with proper handling and care. Versatile Applications: Ideal for fractional distillation, reflux, purification, and general chemistry procedures.
$35.85 - $230.00
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POMEX Glass One Neck Round Bottom Boiling Laboratory Flask with 19/22 Taper Outer Joint
Precision 19/22 Taper Outer Joint: Ground glass joint provides a tight, reliable seal with compatible 19/22 inner joint glassware, minimizing leaks and sample loss. High-Quality Borosilicate Glass: Excellent thermal shock resistance and chemical inertness, safe for direct heating, cooling, and autoclaving. Round Bottom Design: Promotes uniform heating and even boiling, ideal for distillation, reflux, and rotary evaporation. Single Neck Configuration: Simple, versatile design that fits standard lab setups and accommodates a variety of attachments. Excellent Chemical Resistance: Inert surface resists most acids, bases, and solvents, ensuring sample purity and accurate results. Clear & Transparent: Allows easy visual monitoring of reactions, boiling, and sample volume. Durable & Reusable: Smooth, non-porous glass is easy to clean and built for repeated laboratory use.
$18.95 - $290.00
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POMEX Glass Penny Head Hollow Stopper 14/20 19/22 24/40 29/42 Outer Joints Lab Solid Plug
This glass penny head hollow stopper is manufactured from high-quality borosilicate glass 3.3, offering excellent chemical resistance, thermal shock resistance, and optical clarity. The penny head design provides a flat, circular top for easy handling, while the hollow construction reduces weight and material usage without compromising strength. The precision-ground standard taper joint ensures a secure, leak-free fit in outer joints of 14/20, 19/22, 24/40, and 29/42 sizes. Ideal for sealing flasks, columns, condensers, and other laboratory glassware during storage, reactions, and transport. Key Features Laboratory-Grade Borosilicate Glass 3.3: High chemical durability and thermal stability for routine and demanding laboratory applications. Penny Head Design: Flat, circular top for comfortable grip and easy insertion/removal. Hollow Construction: Lightweight yet durable; reduces overall weight and cost without sacrificing performance. Precision-Ground Standard Taper Joint: Ensures a secure, leak-free fit in compatible outer joints. Multiple Joint Sizes Available: Fits 14/20, 19/22, 24/40, and 29/42 standard taper outer joints. Excellent Thermal Shock Resistance: Withstands typical laboratory temperature changes without cracking. Chemical Resistance: Resists most common acids, bases, solvents, and reagents under normal laboratory conditions. Clear Borosilicate Construction: Allows easy visual inspection of joint engagement and contents. Uniform Wall Thickness: Promotes even stress distribution and enhances durability. Reusable and Long-Lasting: Designed for repeated use with proper handling and care. Versatile Applications: Ideal for sealing flasks, columns, condensers, adapters, and other glassware during storage, reactions, and transport. Package Includes: Glass Penny Head Hollow Stopper.
$17.95 - $140.00
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POMEX Glass Single Neck Round Bottom Flask with 14/20 Taper Outer Joint 150ml 50ml 25ml
Precision 14/20 Taper Outer Joint: Ground glass joint provides a tight, reliable seal with compatible 14/20 inner joint glassware, minimizing leaks and sample loss. High-Quality Borosilicate Glass: Excellent thermal shock resistance and chemical inertness, safe for direct heating, cooling, and autoclaving. Round Bottom Design: Promotes uniform heating and even boiling, ideal for distillation, reflux, and rotary evaporation. Single Neck Configuration: Simple, versatile design that fits standard lab setups and accommodates a variety of attachments. Excellent Chemical Resistance: Inert surface resists most acids, bases, and solvents, ensuring sample purity and accurate results. Clear & Transparent: Allows easy visual monitoring of reactions, boiling, and sample volume. Durable & Reusable: Smooth, non-porous glass is easy to clean and built for repeated laboratory use.
$18.95 - $190.00
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POMEX Glass Vigreux Distillation Column with Side Arm 29/42 Joints Length 100mm to 600mm Borosilicate Laboratory-Grade
Laboratory-Grade Borosilicate Glass 3.3: High chemical durability and thermal stability for routine and demanding laboratory applications. Vigreux Indentation Design: Internal points increase surface area for improved fractional distillation and separation efficiency. Integrated Side Arm: Allows direct attachment of a condenser for flexible distillation configurations. 29/42 Standard Taper Joints: Precision-ground conical joints at top, bottom, and side arm ensure secure, leak-free connections with compatible glassware. Multiple Lengths Available: Choose from 100 mm to 600 mm to suit different separation requirements. Efficient Fractional Distillation: Provides multiple theoretical plates for better separation of close-boiling liquid mixtures. Excellent Thermal Shock Resistance: Withstands typical laboratory temperature changes without cracking. Chemical Resistance: Resists most common acids, bases, solvents, and reagents under normal laboratory conditions. Clear Borosilicate Construction: Allows easy visual monitoring of reflux and distillation progress. Uniform Wall Thickness: Promotes even heating and reduces stress points for enhanced durability. Reusable and Long-Lasting: Designed for repeated use with proper handling and care. Versatile Applications: Ideal for fractional distillation, reflux, purification, synthesis, and general chemistry procedures. Package Includes: Vigreux Distillation Column with Side Arm 29/42 Joint.
$47.85 - $240.00
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POMEX Glass Volumetric Flask with Glass Stopper Borosilicate Glass Heavy Wall 5ml to 5000ml
Heavy Wall Construction: Thicker glass walls offer increased mechanical strength and long-term durability. Matching Glass Stopper: Included ground glass stopper provides a tight seal to prevent leakage and evaporation. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance, high chemical durability, and clear visibility of contents. Wide Capacity Range: Available from 5ml to 5000ml to accommodate various laboratory needs. Clear Graduation Line: Prominent calibration mark allows easy and accurate reading of the meniscus. Flat Bottom Base: Provides stability when standing on the lab bench. Chemical Resistance: Resistant to most acids, bases, and organic solvents. Thermal Shock Resistance: Withstands typical laboratory temperature changes when used correctly. Autoclavable: Safe for sterilization by autoclaving. Precision-Ground Joint: Stopper fits securely and removes easily without seizing. Durable & Reusable: Designed for repeated use, reducing replacement costs. Versatile Applications: Ideal for analytical chemistry, titration, dilution, and quality control.
$12.85 - $125.00
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SYNTHWARE Graduated Constant Pressure Dropping Funnel Teflon Stopcock 19/22 Joint
Ensure accurate, controlled, and dropwise addition of reagents under closed or inert conditions with our Pressure Equalizing Graduated Addition Funnel. Crafted from high-quality borosilicate 3.3 glass, this funnel features a chemically resistant PTFE stopcock and a 19/22 standard taper joint for secure, leak-resistant connections. The pressure-equalizing side arm allows for smooth, consistent flow without the need for repeated venting, making it ideal for air-sensitive and moisture-sensitive reactions. The clear glass body is graduated with easy-to-read volume markings, so you can monitor liquid addition with precision. Available in 25ml, 60ml, 125ml, and 250ml capacities, this addition funnel is an essential tool for organic synthesis, pharmaceutical research, and any laboratory procedure requiring controlled reagent delivery. Key Features & Benefits: Pressure Equalizing Design: The integral side arm equalizes pressure between the funnel and the reaction vessel, ensuring steady dropwise addition and preventing backpressure or vacuum issues. PTFE Stopcock: Chemically inert and highly resistant to aggressive solvents, acids, and bases. Provides smooth, precise flow control without seizing or contamination. Graduated Body: Clear volume markings on the borosilicate glass allow for accurate monitoring of liquid dispensed and remaining. 19/22 Standard Taper Joint: Ensures a tight, leak-resistant fit with 19/22 compatible flasks, adapters, and stoppers. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance and chemical durability for long service life. Multiple Capacity Options: Choose from 25ml, 60ml, 125ml, or 250ml to suit your specific reaction scale.
$45.95 - $160.00
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POMEX Graduated Glass Separatory Funnel with Glass Stopper & Glass Stopcock Boro 3.3 Laboratory Liquid Separation and Extraction 60 mL to 1000 mL
This graduated glass separatory funnel is designed for precise liquid-liquid extraction, separation, and purification in the laboratory. Made from Borosilicate 3.3 glass, it offers excellent chemical durability, thermal shock resistance, and clarity. The funnel features printed volume graduations for convenient monitoring, a matching glass stopper, and a glass stopcock for controlled flow. The conical shape ensures clean phase separation, making it ideal for routine lab work. Available in capacities from 60 mL to 1000 mL. Key Features: Borosilicate 3.3 Glass Construction: High-quality borosilicate glass 3.3 for superior chemical resistance, thermal shock resistance, and optical clarity. Graduated Volume Markings: Printed scale allows easy estimation and monitoring of liquid volume during extraction and separation. Glass Stopper Included: Matching ground glass stopper seals the top opening, reducing contamination risk and evaporation. Glass Stopcock: Provides precise control of liquid flow and is resistant to many laboratory chemicals. May require a thin layer of stopcock grease for smooth operation and a leak-free seal. Standard Taper Joint: Designed with a standard taper joint for compatibility with common laboratory glassware. Please confirm joint size before ordering. Conical / Pear Shape: Promotes efficient separation of immiscible liquids and smooth draining of the lower layer. Clear Visibility: Transparent glass allows easy observation of the liquid interface during extraction. Chemical & Thermal Resistant: Suitable for use with most acids, bases, and organic solvents. Not recommended for hydrofluoric acid (HF). Reusable & Easy to Clean: Can be cleaned with mild laboratory detergent and distilled water. Autoclavable when properly disassembled. Wide Capacity Range: Available from 60 mL to 1000 mL to suit different laboratory volumes and applications.
$35.95 - $180.00
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POMEX Graduated Laboratory Erlenmeyer Flask Borosilicate Glass with 29/42 Outer Joint
Durable Glass Construction: Manufactured from high-grade borosilicate glass, this flask can withstand rapid temperature changes without cracking. Superior Thermal Shock Resistance: It is safe for use with open flames, hot plates, and autoclaving, making it ideal for heating and cooling applications. Excellent Chemical Resistance: Suitable for handling a wide variety of common laboratory chemicals and solutions. Clear Visibility: Transparent glass makes it easy to observe samples, reactions, and liquid levels. Versatile Applications: Ideal for laboratories, schools, research facilities, chemical testing, and general sample preparation.
$24.95 - $350.95
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POMEX Graduated Laboratory Erlenmeyer Flask Narrow Mouth with Stopper 50ml to 5000ml
High-Quality Borosilicate Glass: Excellent thermal shock resistance and chemical durability, safe for heating, cooling, and autoclaving. Narrow Mouth Design: Helps prevent splashing during vigorous mixing and allows for secure stoppering. Included Silicone Stopper: Creates an airtight, leak-resistant seal to reduce evaporation and contamination. Flexible, reusable, and easy to insert or remove. Removable Center for Thermometer: The center plug can be easily removed to insert a thermometer, allowing you to monitor temperature without opening the container. Acid & Alkali Resistant: Both the glass and silicone stopper withstand exposure to most acids, bases, and common chemicals. Stable Conical Shape: Wide flat base provides stability on the benchtop, while the tapered body supports controlled swirling. Clear Volume Markings: Easy-to-read graduations and a marking spot for quick identification and measurement. Reusable & Easy to Clean: Smooth glass surface and silicone stopper are simple to wash and maintain.
$14.95 - $220.00
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POMEX Graduated Separating Funnel with 19/22 Joint PTFE Stopcock Borosilicate Glass Heavy Wall 125ml
This graduated separatory funnel is made from heavy-wall borosilicate glass for dependable liquid-liquid extraction, separation, and purification. The conical body, 19/22 standard taper joint, and PTFE stopcock provide a secure, chemically resistant setup for laboratory use. Graduation markings allow convenient volume monitoring during extraction and separation. Key Features: Heavy-Wall Borosilicate Glass: Made from borosilicate glass 3.3 for excellent chemical durability, clarity, and thermal shock resistance. Graduated Scale: Printed volume markings help estimate and monitor liquid volume during use. 19/22 Taper Joint: Compatible with 19/22 stoppers, adapters, and standard lab glassware for a secure fit. PTFE Stopcock: Chemically resistant PTFE stopcock eliminates the need for grease, reducing contamination risk and preventing seizing or freezing. Conical / Pear Shape: Promotes clean phase separation and smooth draining of the lower layer. Clear Visibility: Transparent glass allows easy observation of the liquid interface and separation process. Chemical Resistant: Suitable for use with most acids, bases, and organic solvents. Reusable & Easy to Clean: Can be cleaned with mild laboratory detergent and distilled water. Autoclavable when properly disassembled. Durable Laboratory Design: Heavy-wall construction adds mechanical strength for repeated use.
$49.99 - $150.00
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