{"product_id":"teflon-stopcock-graduated-constant-pressure-dropping-funnel-14-20-joint-10ml-25ml-60ml-125ml","title":"Teflon Stopcock Graduated Constant Pressure Dropping Funnel 14\/20 Joint","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eAchieve 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eAvailable 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Features \u0026amp; Benefits:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePTFE (Teflon) Stopcock:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Chemically inert and highly resistant to aggressive solvents, acids, and bases. Provides smooth, precise flow control without seizing or contamination.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eConstant Pressure Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e The integral side arm equalizes pressure between the funnel and the reaction vessel, allowing consistent dropwise addition and preventing backpressure or vacuum issues.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eGraduated Body:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Clear volume markings on the borosilicate glass allow for accurate monitoring of liquid dispensed and remaining.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e14\/20 Standard Taper Joint:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ensures a tight, leak-resistant fit with 14\/20 compatible flasks, adapters, and stoppers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePremium Borosilicate 3.3 Glass:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Excellent thermal shock resistance and chemical durability for long service life.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMultiple Capacity Options:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Choose from 10ml, 25ml, 60ml, or 125ml to suit your specific reaction scale.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAutoclavable:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Suitable for standard sterilization procedures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SYNTHWARE","offers":[{"title":"10ml","offer_id":45657224020144,"sku":"P06673","price":42.99,"currency_code":"USD","in_stock":true},{"title":"10ml x 4Pcs","offer_id":45657224052912,"sku":"P06674","price":100.0,"currency_code":"USD","in_stock":true},{"title":"25ml","offer_id":45657224085680,"sku":"P06675","price":45.95,"currency_code":"USD","in_stock":true},{"title":"25ml x 4Pcs","offer_id":45657224118448,"sku":"P06676","price":110.0,"currency_code":"USD","in_stock":true},{"title":"60ml","offer_id":45657224151216,"sku":"P06677","price":49.95,"currency_code":"USD","in_stock":true},{"title":"60ml x 4Pcs","offer_id":45657224183984,"sku":"P06678","price":120.0,"currency_code":"USD","in_stock":true},{"title":"125ml","offer_id":45657224216752,"sku":"P06679","price":55.99,"currency_code":"USD","in_stock":true},{"title":"125ml x 4Pcs","offer_id":45657224249520,"sku":"P06380","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/8512\/0944\/files\/PressureEqualizePTFE14-20-60ml.png?v=1791168839","url":"https:\/\/scientificsupplydirect.com\/products\/teflon-stopcock-graduated-constant-pressure-dropping-funnel-14-20-joint-10ml-25ml-60ml-125ml","provider":"Scientific Supply Direct Corp.","version":"1.0","type":"link"}