{"product_id":"20ml-glass-vials-with-screw-caps-leakproof-freezable-lab-vials","title":"20ml Glass Vials With Screw Caps - Leakproof Freezable Lab Vials","description":"\u003cp\u003eIn this review the 20ml Glass Vials With Screw Caps are evaluated for lab and small-batch storage use; they are best for researchers, technicians and hobbyists who need compact, chemically resistant containers. The single biggest reason to buy is the combination of \u003cstrong\u003eUSP Type I borosilicate glass\u003c\/strong\u003e and assembled screw caps that deliver reliable sealing and low-extractable chemistry, making these vials suitable for storing solvents, small reagent samples, and frozen aliquots down to -70 degree Celsius.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBorosilicate glass:\u003c\/strong\u003e Low potassium and low sodium composition provides chemical stability for labs and analytical work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh temperature tolerance:\u003c\/strong\u003e Can be sterilized by heat at 121 degrees, which supports autoclave workflows and repeated sterilization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze-safe:\u003c\/strong\u003e The glass tolerates freezing down to -70 degree Celsius, useful for long-term sample storage or cold-chain needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeakproof screw caps:\u003c\/strong\u003e Assembled with polypropylene caps and PE liners to reduce volatilization and prevent leakage during handling and transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical resistance:\u003c\/strong\u003e Suitable for common organic solvents such as alcohol and acetone, and for storing powders or small solid particles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe vials are aimed at laboratory technicians, life science researchers, quality control teams, and small-scale pharmaceutical or industrial users who need \u003cstrong\u003econsistent, low-extractable glass\u003c\/strong\u003e containers for samples and reagents. They are also convenient for education labs and makers who require small, durable bottles with dependable seals.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing certified sterile single-use packaging out of the box or those requiring specialized septa, crimp tops, or syringe-cap access; these are assembled with standard polypropylene screw caps rather than specialized fittings.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConforms to USP Type I and ASTM E438 Type I Class A requirements, offering low-extractable performance for sensitive assays.\u003c\/li\u003e\n\u003cli\u003eGood thermal and chemical resistance allows autoclaving and storage with organic solvents without rapid degradation.\u003c\/li\u003e\n\u003cli\u003eLeakproof polypropylene caps with PE liners provide extended sealing to protect contents from volatilization.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe screw-cap assembly is practical but does not replace specialized septa or crimp closures required for certain analytical instruments.\u003c\/li\u003e\n\u003cli\u003ePack is bulk (100 pcs) which may be more than needed for infrequent or single-use hobby projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e20 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eType I borosilicate glass (Perex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap type\u003c\/td\u003e\n\u003ctd\u003e24-400 polypropylene screw caps with PE liners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003eFreeze to -70 degree Celsius; sterilize to 121 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e100 pieces per pack (500 pcs per case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical compatibility\u003c\/td\u003e\n\u003ctd\u003eGood for organic solvents such as alcohol and acetone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThese 20ml glass vials are a solid value for labs and small-scale users who need \u003cstrong\u003edurable, low-extractable borosilicate containers\u003c\/strong\u003e with reliable screw-cap sealing. They balance chemical resistance, thermal tolerance and practical sealing at a bulk pack size, making them a sensible choice for routine sample storage, reagent aliquots, and frozen samples.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these vials be autoclaved?\u003c\/strong\u003e\u003cbr\u003eYes, the borosilicate glass can be sterilized by heat at 121 degrees and withstands standard autoclave cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the caps leakproof for transport?\u003c\/strong\u003e\u003cbr\u003eThe polypropylene screw caps with PE liners provide strong sealing to reduce leakage and volatilization for normal handling and transport.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan they store solvents?\u003c\/strong\u003e\u003cbr\u003eYes, they are suitable for common organic solvents such as alcohol and acetone thanks to the chemical resistance of the glass and liner materials.\u003c\/p\u003e","brand":"XHPHAPACK","offers":[{"title":"Default Title","offer_id":48670186242267,"sku":"B0BG1T91N3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61XkTioGZ9L._AC_SL1500.jpg?v=1778649702","url":"https:\/\/gearmusthave.com\/products\/20ml-glass-vials-with-screw-caps-leakproof-freezable-lab-vials","provider":"GearMustHave","version":"1.0","type":"link"}