Products
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SYNTHWARE Teflon Stopcock Graduated Constant Pressure Dropping Funnel 14/20 Joint
Achieve accurate, controlled addition of liquids under inert atmospheres or closed systems with our Teflon Stopcock Graduated Constant Pressure Dropping Funnel. Designed for demanding laboratory applications, this pressure-equalizing funnel features a PTFE (Teflon) stopcock for smooth, chemically resistant flow control, and a 14/20 standard taper joint for secure connections. The clear borosilicate glass body is graduated with easy-to-read volume markings, allowing you to monitor liquid addition in real time. The built-in side arm equalizes pressure between the funnel and the reaction flask, ensuring steady dropwise addition without the need for repeated venting. Available in 10ml, 25ml, 60ml, and 125ml capacities, this constant pressure dropping funnel is an essential tool for organic synthesis, air-sensitive reactions, and any procedure requiring precise reagent addition. Key Features & Benefits: PTFE (Teflon) Stopcock: Chemically inert and highly resistant to aggressive solvents, acids, and bases. Provides smooth, precise flow control without seizing or contamination. Constant Pressure Design: The integral side arm equalizes pressure between the funnel and the reaction vessel, allowing consistent dropwise addition and preventing backpressure or vacuum issues. 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.
$42.99 - $150.00
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POMEX Three Neck Borosilicate Lab Glass Round Bottom Flask 14/20 19/22 24/40 29/42 Joints
Premium Borosilicate 3.3 Glass: High thermal shock resistance, excellent chemical durability, and clear visibility of contents. Multiple Joint Sizes Available: Choose from 14/20, 19/22, 24/40, or 29/42 standard taper outer joints to match your existing lab glassware. Standard Taper Joints: Precision-ground for a secure, accurate fit with condensers, adapters, stoppers, thermometers, and addition funnels. Three-Neck Configuration: Center neck plus two side necks allow multiple operations at once, improving workflow and reducing setup complexity. Round Bottom Design: Ideal for uniform heating and efficient magnetic stirring in heating mantles; helps minimize hot spots and bumping. Heavy-Wall Construction: Durable, autoclavable, and built for repeated use in demanding laboratory environments. Precision-Ground Joints: Smooth, accurately tapered joints ensure easy connection and removal without seizing. Uniform Wall Thickness: Promotes even heat transfer and reliable mechanical strength. Chemical Resistance: Resistant to most acids, bases, and organic solvents. Clear Glass: Allows easy observation of reactions, boiling, and liquid levels. Versatile Applications: Suitable for multi-step synthesis, distillation, reflux, extraction, titration, and general research. Available in Multiple Capacities: Select the capacity that best fits your application; available sizes vary by joint type.
$24.99 - $250.99
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POMEX Three Neck Round Bottom Boiling Flask 14/20 Joints Borosilicate Lab Glassware
Three-Neck Design: Allows for simultaneous addition of reagents, temperature monitoring, and distillation/condensation. Precision-Ground 14/20 Joints: The three vertical necks feature standard 14/20 Taper Outer Joints, ensuring a tight, leak-proof fit with your existing condensers, adapters, and thermometers. 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.
$25.99 - $100.00
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POMEX Three Neck Round Bottom Flask 29/42 Joints Borosilicate Lab Glassware
Three-Neck Design: Allows for simultaneous addition of reagents, temperature monitoring, and distillation/condensation. Precision-Ground 29/42 Joints: All three necks feature 29/42 male joints for a secure, leak-proof fit with standard 29/42 condensers, adapters, stoppers, thermometers, and addition funnels. 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.
$29.99 - $160.00
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POMEX Three Neck Round Bottom Flask Borosilicate Lab Glassware ST24/40 Standard Taper Outer Joints
24/40 Standard Taper Outer Joints: All three necks feature 24/40 male joints for a secure, leak-proof fit with standard 24/40 condensers, adapters, stoppers, thermometers, and addition funnels. Three-Neck Design: Allows simultaneous reflux, stirring, reagent addition, temperature monitoring, or distillation in one compact setup. Round Bottom: Ideal for uniform heating and efficient magnetic stirring in heating mantles; helps reduce bumping and hot spots. High-Quality Borosilicate 3.3 Glass: Offers excellent thermal shock resistance, chemical durability, and clear visibility of contents. Heavy-Wall Construction: Durable and autoclavable, designed for repeated use in demanding laboratory environments. Precision-Ground Joints: Smooth, accurately tapered outer joints ensure a tight seal and easy connection or removal without seizing. Uniform Wall Thickness: Promotes even heat transfer and reliable mechanical strength. Chemical Resistance: Resistant to most acids, bases, and organic solvents. Versatile Applications: Suitable for multi-step synthesis, distillation, extraction, reflux, titration, and general lab research. Available Capacities: Choose from common sizes such as 50ml, 100 mL, 250 mL, 500 mL, 1000 mL, and 2000 mL.
$27.99 - $140.00
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POMEX Three-Neck Round Bottom Boiling Flask 19/22 Taper Outer Joint Borosilicate Glass
Three-Neck Design: Allows for simultaneous addition of reagents, temperature monitoring, and distillation/condensation. 19/22 Taper Outer Joints: All three necks feature 19/22 male joints for a secure, leak-proof fit with standard 19/22 condensers, adapters, stoppers, thermometers, and addition funnels. 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.
$26.99 - $140.00
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POMEX Transparent Laboratory Glass Volumetric Flask with Base Borosilicate Glass Heavy Wall
Flat Base Design: Provides excellent stability when standing on the laboratory bench, preventing tipping and spills. Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance, high chemical durability, and long-lasting performance. Heavy Wall Construction: Thicker glass walls deliver increased mechanical strength and extended service life. Available Capacities: 1ml, 2ml, 5ml, and 10ml to suit micro-scale laboratory applications. Clear Calibration Mark: Prominent graduation line enables accurate and repeatable volume measurement. 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. Durable & Reusable: Designed for repeated use, reducing replacement costs and ensuring long-term value. Versatile Applications: Ideal for analytical chemistry, titration, dilution, quality control, and research.
$17.99 - $160.00
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SYNTHWARE Triangle feeding Funnel 19/22 Inner Joint Filter Funnel Laboratory Glass Short Stem Powder Funnel
Triangle Shape Design: Wide triangular bowl provides a large surface area for easy, spill-free pouring of powders and liquids. 19/22 Inner Joint: Precision-ground inner joint ensures a secure, leak-proof fit with standard 19/22 outer joint glassware. Short Stem: Facilitates smooth and rapid flow, preventing clogging during powder or liquid transfer. Dual Function – Feeding & Filtering: Suitable for use as a feeding funnel and filter funnel in laboratory procedures. Multiple Diameter Options: Available in 50mm, 75mm, and 100mm to accommodate various sample sizes and applications. Powder Transfer Ready: Ideal for transferring powders, granules, and crystalline materials into flasks and reaction vessels. Liquid Transfer Compatible: Also suitable for transferring liquids and solutions. 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 Joint: Smooth, accurately tapered inner joint ensures 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 material flow during transfer. Durable & Reusable: Designed for repeated use, reducing replacement costs and ensuring long-term value.
$28.95 - $100.00
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SYNTHWARE Triangle Feeding Funnel 29/42 Inner Joint Glass Laboratory Grade Powder Diameter
Triangle Shape Design: Wide triangular bowl provides a large surface area for easy, spill-free pouring of powders and liquids. 29/42 Inner Joint: Precision-ground inner joint ensures a secure, leak-proof fit with standard 29/42 outer joint glassware. Short Stem: Facilitates smooth and rapid flow, preventing clogging during powder or liquid transfer. Dual Function – Feeding & Filtering: Suitable for use as a feeding funnel and filter funnel in laboratory procedures. Multiple Diameter Options: Available in 50mm, 75mm, and 100mm to accommodate various sample sizes and applications. Powder Transfer Ready: Ideal for transferring powders, granules, and crystalline materials into flasks and reaction vessels. Liquid Transfer Compatible: Also suitable for transferring liquids and solutions. 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 Joint: Smooth, accurately tapered inner joint ensures 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 material flow during transfer. Durable & Reusable: Designed for repeated use, reducing replacement costs and ensuring long-term value. Package Includes: Triangle Feeding Funnel with 29/42 Inner Joint.
$32.95 - $110.00
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POMEX Two Neck Round Bottom Boiling Laboratory Flask Borosilicate Glass RBF 19/22 Joints
Taper Outer Joints: Center 19/22 joint, side necks are 19/22 or 14/20 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.
$27.99 - $115.00
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POMEX Vacuum Take Off Adapter Distillation Connecting 105° Bent Short Stem 14/20 19/22 24/40 29/42 Joints Vacuum Receiving Tube Borosilicate Glass Laboratory Grade
Professional-grade vacuum take off adapter with 105° bent short stem, designed for vacuum distillation and distillate collection applications. This distillation connecting adapter securely connects the distillation head to the vacuum receiving tube, allowing efficient transfer and collection of distillate under vacuum. 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. Key Features: 105° Bent Design: Optimized angle for efficient vapor and distillate flow during vacuum distillation. Short Stem: Compact stem design minimizes dead volume and reduces sample loss during transfer. Vacuum Take Off Function: Specifically designed to divert and collect distillate under vacuum conditions. Distillation Connecting Adapter: Securely connects distillation head to vacuum receiving tube for efficient distillate transfer. Vacuum Receiving Tube Compatible: Designed to work seamlessly with standard vacuum receiving tubes and 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, distillation heads, and receiving flasks. 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 distillate flow during vacuum distillation. Durable & Reusable: Designed for repeated use, reducing replacement costs and ensuring long-term value. Package Includes: Vacuum Take Off Adapter with 105° Bent Short Stem.
$25.95 - $90.00
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POMEX Vigreux Distillation Column with Side Arm 19/22 Joints Fractional Distillation Column Borosilicate Glass
This Vigreux distillation column with side arm is manufactured from high-quality borosilicate glass 3.3, offering excellent chemical resistance, thermal shock resistance, and optical clarity. The column features a series of internal Vigreux indentations that increase surface area and provide multiple theoretical plates for efficient fractional distillation. The integrated side arm allows for convenient attachment of a condenser, enabling flexible distillation setups. With 19/22 standard taper joints at the top, bottom, and side arm, it is compatible with a wide range of laboratory glassware, including flasks, condensers, distillation heads, and adapters. Available in lengths from 100 mm to 600 mm, it is ideal for precise separation and purification of liquid mixtures in research, industrial, and teaching laboratories. Key Features 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. 19/22 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, 200 mm, 250 mm, 300 mm, 400 mm, 500 mm, or 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. Versatile Applications: Ideal for fractional distillation, reflux, purification, synthesis, and general chemistry procedures.
$42.85 - $250.00
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