{"product_id":"lab-glassware-clear-borosilicate-glass-single-neck-round-bottom-reactive-flask-with-glass-stopcock","title":"Reaction Flask with Glass Stopcock (CS-F53) 50–1000 ml","description":"\u003cp data-start=\"356\" data-end=\"730\"\u003eThe \u003cstrong data-start=\"360\" data-end=\"385\"\u003eCS-F53 Reaction Flask\u003c\/strong\u003e is a laboratory-grade round-bottom vessel designed for \u003cstrong data-start=\"441\" data-end=\"516\"\u003econtrolled chemical reactions, reagent addition, drainage, and sampling\u003c\/strong\u003e. Manufactured from \u003cstrong data-start=\"536\" data-end=\"575\"\u003ehigh-quality 3.3 borosilicate glass\u003c\/strong\u003e, each flask features an integrated \u003cstrong data-start=\"611\" data-end=\"634\"\u003e2 mm glass stopcock\u003c\/strong\u003e and precision ground joint, enabling accurate liquid control directly from the reaction vessel.\u003c\/p\u003e\n\u003cp data-start=\"732\" data-end=\"1053\"\u003eEvery unit is \u003cstrong data-start=\"746\" data-end=\"783\"\u003ehand-blown and annealed at 800 °C\u003c\/strong\u003e, producing a \u003cstrong data-start=\"797\" data-end=\"830\"\u003ethick-wall, uniform structure\u003c\/strong\u003e with excellent resistance to thermal shock and chemical attack. These flasks can be heated directly over open flame (with appropriate laboratory practice) and are suitable for demanding synthesis and research environments.\u003c\/p\u003e\n\u003chr data-start=\"1055\" data-end=\"1058\"\u003e\n\u003ch3 data-start=\"1060\" data-end=\"1076\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1078\" data-end=\"1799\"\u003e\n\u003cli data-start=\"1078\" data-end=\"1192\"\u003e\n\u003cp data-start=\"1080\" data-end=\"1192\"\u003e\u003cstrong data-start=\"1080\" data-end=\"1117\"\u003eHeavy-wall borosilicate 3.3 glass\u003c\/strong\u003e\u003cbr data-start=\"1117\" data-end=\"1120\"\u003eHigh resistance to heat, acids, alkalis, and most laboratory solvents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1194\" data-end=\"1320\"\u003e\n\u003cp data-start=\"1196\" data-end=\"1320\"\u003e\u003cstrong data-start=\"1196\" data-end=\"1230\"\u003eIntegrated 2 mm glass stopcock\u003c\/strong\u003e\u003cbr data-start=\"1230\" data-end=\"1233\"\u003eAllows precise draining or controlled reagent transfer without dismantling the setup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1322\" data-end=\"1412\"\u003e\n\u003cp data-start=\"1324\" data-end=\"1412\"\u003e\u003cstrong data-start=\"1324\" data-end=\"1349\"\u003eRound-bottom geometry\u003c\/strong\u003e\u003cbr data-start=\"1349\" data-end=\"1352\"\u003ePromotes even heat distribution during reflux and boiling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1414\" data-end=\"1521\"\u003e\n\u003cp data-start=\"1416\" data-end=\"1521\"\u003e\u003cstrong data-start=\"1416\" data-end=\"1443\"\u003ePrecision ground joints\u003c\/strong\u003e\u003cbr data-start=\"1443\" data-end=\"1446\"\u003eCompatible with standard condensers, adapters, and laboratory assemblies.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1523\" data-end=\"1626\"\u003e\n\u003cp data-start=\"1525\" data-end=\"1626\"\u003e\u003cstrong data-start=\"1525\" data-end=\"1552\"\u003eHand-blown construction\u003c\/strong\u003e\u003cbr data-start=\"1552\" data-end=\"1555\"\u003eUniform wall thickness for improved durability and thermal stability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1628\" data-end=\"1718\"\u003e\n\u003cp data-start=\"1630\" data-end=\"1718\"\u003e\u003cstrong data-start=\"1630\" data-end=\"1664\"\u003eMulti-stage quality inspection\u003c\/strong\u003e\u003cbr data-start=\"1664\" data-end=\"1667\"\u003eCleaned, annealed, and inspected before dispatch.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1720\" data-end=\"1799\"\u003e\n\u003cp data-start=\"1722\" data-end=\"1799\"\u003e\u003cstrong data-start=\"1722\" data-end=\"1745\"\u003eOEM \/ ODM available\u003c\/strong\u003e\u003cbr data-start=\"1745\" data-end=\"1748\"\u003eCustom sizes, branding, and packaging on request.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1801\" data-end=\"1804\"\u003e\n\u003ch3 data-start=\"1806\" data-end=\"1846\"\u003eAvailable Capacities \u0026amp; Joint Options\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1848\" data-end=\"2129\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1848\" data-end=\"1879\"\u003e\n\u003ctr data-start=\"1848\" data-end=\"1879\"\u003e\n\u003cth data-start=\"1848\" data-end=\"1859\" data-col-size=\"sm\" class=\"\"\u003eCapacity\u003c\/th\u003e\n\u003cth data-start=\"1859\" data-end=\"1867\" data-col-size=\"sm\" class=\"\"\u003eJoint\u003c\/th\u003e\n\u003cth data-start=\"1867\" data-end=\"1879\" data-col-size=\"sm\" class=\"\"\u003eStopcock\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1910\" data-end=\"2129\"\u003e\n\u003ctr data-start=\"1910\" data-end=\"1943\"\u003e\n\u003ctd data-start=\"1910\" data-end=\"1918\" data-col-size=\"sm\"\u003e50 ml\u003c\/td\u003e\n\u003ctd data-start=\"1918\" data-end=\"1935\" data-col-size=\"sm\"\u003e14\/20 or 19\/22\u003c\/td\u003e\n\u003ctd data-start=\"1935\" data-end=\"1943\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1944\" data-end=\"1986\"\u003e\n\u003ctd data-start=\"1944\" data-end=\"1953\" data-col-size=\"sm\"\u003e100 ml\u003c\/td\u003e\n\u003ctd data-start=\"1953\" data-end=\"1978\" data-col-size=\"sm\"\u003e14\/20, 19\/22, or 24\/40\u003c\/td\u003e\n\u003ctd data-start=\"1978\" data-end=\"1986\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1987\" data-end=\"2029\"\u003e\n\u003ctd data-start=\"1987\" data-end=\"1996\" data-col-size=\"sm\"\u003e250 ml\u003c\/td\u003e\n\u003ctd data-start=\"1996\" data-end=\"2021\" data-col-size=\"sm\"\u003e14\/20, 19\/22, or 24\/40\u003c\/td\u003e\n\u003ctd data-start=\"2021\" data-end=\"2029\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2030\" data-end=\"2064\"\u003e\n\u003ctd data-start=\"2030\" data-end=\"2039\" data-col-size=\"sm\"\u003e500 ml\u003c\/td\u003e\n\u003ctd data-start=\"2039\" data-end=\"2056\" data-col-size=\"sm\"\u003e24\/40 or 29\/42\u003c\/td\u003e\n\u003ctd data-start=\"2056\" data-end=\"2064\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2065\" data-end=\"2091\"\u003e\n\u003ctd data-start=\"2065\" data-end=\"2075\" data-col-size=\"sm\"\u003e1000 ml\u003c\/td\u003e\n\u003ctd data-start=\"2075\" data-end=\"2083\" data-col-size=\"sm\"\u003e24\/40\u003c\/td\u003e\n\u003ctd data-start=\"2083\" data-end=\"2091\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2092\" data-end=\"2129\"\u003e\n\u003ctd data-start=\"2092\" data-end=\"2113\" data-col-size=\"sm\"\u003e2000 ml (optional)\u003c\/td\u003e\n\u003ctd data-start=\"2113\" data-end=\"2121\" data-col-size=\"sm\"\u003e24\/40\u003c\/td\u003e\n\u003ctd data-start=\"2121\" data-end=\"2129\" data-col-size=\"sm\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"2131\" data-end=\"2134\"\u003e\n\u003ch3 data-start=\"2136\" data-end=\"2164\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"2166\" data-end=\"2570\"\u003e\n\u003cli data-start=\"2166\" data-end=\"2222\"\u003e\n\u003cp data-start=\"2168\" data-end=\"2222\"\u003e\u003cstrong data-start=\"2168\" data-end=\"2185\"\u003eProduct Name:\u003c\/strong\u003e Reaction Flask with Glass Stopcock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2223\" data-end=\"2251\"\u003e\n\u003cp data-start=\"2225\" data-end=\"2251\"\u003e\u003cstrong data-start=\"2225\" data-end=\"2235\"\u003eModel:\u003c\/strong\u003e CS-F53 Series\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2252\" data-end=\"2300\"\u003e\n\u003cp data-start=\"2254\" data-end=\"2300\"\u003e\u003cstrong data-start=\"2254\" data-end=\"2267\"\u003eMaterial:\u003c\/strong\u003e Borosilicate glass (3.3 grade)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2301\" data-end=\"2322\"\u003e\n\u003cp data-start=\"2303\" data-end=\"2322\"\u003e\u003cstrong data-start=\"2303\" data-end=\"2314\"\u003eColour:\u003c\/strong\u003e Clear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2323\" data-end=\"2355\"\u003e\n\u003cp data-start=\"2325\" data-end=\"2355\"\u003e\u003cstrong data-start=\"2325\" data-end=\"2340\"\u003eFlask Type:\u003c\/strong\u003e Round bottom\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2356\" data-end=\"2401\"\u003e\n\u003cp data-start=\"2358\" data-end=\"2401\"\u003e\u003cstrong data-start=\"2358\" data-end=\"2371\"\u003eStopcock:\u003c\/strong\u003e Integrated glass, 2 mm bore\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2402\" data-end=\"2468\"\u003e\n\u003cp data-start=\"2404\" data-end=\"2468\"\u003e\u003cstrong data-start=\"2404\" data-end=\"2419\"\u003eCapacities:\u003c\/strong\u003e 50 ml – 1000 ml (2000 ml available on request)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2469\" data-end=\"2488\"\u003e\n\u003cp data-start=\"2471\" data-end=\"2488\"\u003e\u003cstrong data-start=\"2471\" data-end=\"2479\"\u003eMOQ:\u003c\/strong\u003e 1 pack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2489\" data-end=\"2527\"\u003e\n\u003cp data-start=\"2491\" data-end=\"2527\"\u003e\u003cstrong data-start=\"2491\" data-end=\"2505\"\u003ePackaging:\u003c\/strong\u003e Safe export packing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2528\" data-end=\"2570\"\u003e\n\u003cp data-start=\"2530\" data-end=\"2570\"\u003e\u003cstrong data-start=\"2530\" data-end=\"2548\"\u003eCustomisation:\u003c\/strong\u003e OEM \/ ODM supported\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2572\" data-end=\"2575\"\u003e\n\u003ch3 data-start=\"2577\" data-end=\"2601\"\u003eTypical Applications\u003c\/h3\u003e\n\u003cul data-start=\"2603\" data-end=\"2784\"\u003e\n\u003cli data-start=\"2603\" data-end=\"2625\"\u003e\n\u003cp data-start=\"2605\" data-end=\"2625\"\u003eChemical synthesis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2626\" data-end=\"2669\"\u003e\n\u003cp data-start=\"2628\" data-end=\"2669\"\u003eControlled reagent addition or drainage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2670\" data-end=\"2690\"\u003e\n\u003cp data-start=\"2672\" data-end=\"2690\"\u003eReflux reactions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2691\" data-end=\"2720\"\u003e\n\u003cp data-start=\"2693\" data-end=\"2720\"\u003eSampling during reactions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2721\" data-end=\"2746\"\u003e\n\u003cp data-start=\"2723\" data-end=\"2746\"\u003eTeaching laboratories\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2747\" data-end=\"2784\"\u003e\n\u003cp data-start=\"2749\" data-end=\"2784\"\u003eResearch and analytical chemistry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2786\" data-end=\"2789\"\u003e\n\u003ch3 data-start=\"2791\" data-end=\"2802\"\u003eSummary\u003c\/h3\u003e\n\u003cp data-start=\"2804\" data-end=\"3180\"\u003eThe \u003cstrong data-start=\"2808\" data-end=\"2833\"\u003eCS-F53 Reaction Flask\u003c\/strong\u003e combines \u003cstrong data-start=\"2843\" data-end=\"2883\"\u003eheavy-wall borosilicate construction\u003c\/strong\u003e, \u003cstrong data-start=\"2885\" data-end=\"2912\"\u003eprecision ground joints\u003c\/strong\u003e, and an \u003cstrong data-start=\"2921\" data-end=\"2950\"\u003eintegrated glass stopcock\u003c\/strong\u003e to deliver a versatile solution for controlled laboratory reactions. Designed for durability and accuracy, it is ideal for chemists who need \u003cstrong data-start=\"3092\" data-end=\"3179\"\u003edirect fluid control from the reaction vessel without compromising system integrity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3182\" data-end=\"3312\"\u003eA dependable choice for professional laboratories requiring \u003cstrong data-start=\"3242\" data-end=\"3311\"\u003erobust, heat-resistant reaction flasks with built-in flow control\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cstyle\u003e#detail_decorate_root .magic-0{border-bottom-style:solid;border-bottom-color:#aaaaac;font-family:Roboto;font-size:18px;color:#000;background-color:#b3b2b2;font-style:normal;border-bottom-width:2px;padding-top:8px;padding-bottom:4px}#detail_decorate_root .magic-1{margin-bottom:10px;line-height:0}#detail_decorate_root .magic-2{width:750px;height:750px;overflow:hidden;margin-bottom:0}#detail_decorate_root 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