{"product_id":"pressure-equalizing-graduated-addition-funnel-with-ptfe-stopcock-29-42-joint","title":"Pressure equalizing addition funnel graduated dropping funnel PTFE stopcock 29\/42 joint","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eEfficiently manage large-scale reagent additions with our 500ml or 1000ml Pressure Equalizing Graduated Addition Funnel. Crafted from high-quality borosilicate 3.3 glass, this funnel features a chemically resistant PTFE stopcock and a 29\/42 taper joint for secure, leak-resistant connections. The pressure-equalizing side arm allows for smooth, consistent dropwise addition 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 even at larger volumes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eWith a generous 500ml or 1000ml capacity and a 29\/42 joint, this addition funnel is an essential tool for organic synthesis, pharmaceutical research, pilot-scale reactions, and any laboratory procedure requiring controlled delivery of larger reagent volumes.\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\u003cstrong\u003e\u003cspan class=\"\"\u003ePressure Equalizing Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e The integral side arm equalizes pressure between the funnel and the reaction vessel, ensuring steady dropwise addition and preventing backpressure or vacuum issues.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePTFE 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=\"\"\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=\"\"\u003e29\/42 Taper Joint:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Ensures a tight, leak-resistant fit with 29\/42 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\u003c\/ul\u003e","brand":"SYNTHWARE","offers":[{"title":"500ml","offer_id":45657422004400,"sku":"P06699","price":65.99,"currency_code":"USD","in_stock":true},{"title":"500ml x 4Pcs","offer_id":45657422037168,"sku":"P06700","price":180.0,"currency_code":"USD","in_stock":true},{"title":"1000ml","offer_id":45657422069936,"sku":"P06701","price":69.99,"currency_code":"USD","in_stock":true},{"title":"1000ml x 4Pcs","offer_id":45657422102704,"sku":"P06702","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/8512\/0944\/files\/PressureEqualizePTFE29-42-1000ml.png?v=1791171965","url":"https:\/\/scientificsupplydirect.com\/products\/pressure-equalizing-graduated-addition-funnel-with-ptfe-stopcock-29-42-joint","provider":"Scientific Supply Direct Corp.","version":"1.0","type":"link"}