{"product_id":"globe-scientific-6321-centrifuge-tube-30ml-oak-ridge-round","title":"Globe Scientific 30mL Oak Ridge Round Bottom Centrifuge Tube with Attached Screw Cap (SKU 6321)","description":"\u003ch2\u003e30mL Oak Ridge Round Bottom Centrifuge Tube Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific 30mL Oak Ridge Round Bottom Centrifuge Tube (SKU 6321)\u003c\/strong\u003e is a polypropylene tube built for repeated high-speed spins and reliable sealing. Its attached screw cap stays with the tube, reducing the risk of lost closures during busy workflows. Round bottom geometry distributes force across the base, supporting demanding separation protocols.\u003c\/p\u003e\n\u003cp\u003ePolypropylene construction gives the tube broad chemical resistance and durability across a range of laboratory temperatures. Each tube holds a 30mL working volume in the classic Oak Ridge format trusted by molecular biology, microbiology, and biochemistry teams. Technicians benefit from a leak-resistant closure that integrates with the vessel rather than relying on separate caps.\u003c\/p\u003e\n\u003cp\u003ePackaged 12 tubes per bag, this configuration suits both small benches and high-throughput facilities. LabSupplies.com supplies SKU 6321 with case quantities that simplify standing orders for institutional buyers.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eGlobe Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e6321\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCentrifuge Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e30mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eOak Ridge Round Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\u003c\/td\u003e\n\u003ctd\u003eAttached Screw Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax RCF \/ g-force rating\u003c\/td\u003e\n\u003ctd\u003eContact for specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eContact for specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit of Measure\u003c\/td\u003e\n\u003ctd\u003eBag of 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6321\u003c\/td\u003e\n\u003ctd\u003eCentrifuge Tube, 30mL, Oak Ridge Round Bottom Style, Attached Screw Cap, PP\u003c\/td\u003e\n\u003ctd\u003e12\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cp\u003eOak Ridge tubes serve protocols that demand sturdy vessels for centrifugation, including cell harvesting, protein precipitation, nucleic acid recovery, and density gradient work. Researchers rely on the attached screw cap to maintain a closed system while handling biological samples and reagents.\u003c\/p\u003e\n\u003cp\u003ePolypropylene compatibility makes these tubes suitable for many organic and aqueous solutions used in sample preparation. Microbiology labs, biochemistry groups, and industrial QC teams use the 30mL format for mid-volume separations where a round bottom helps consolidate pellets.\u003c\/p\u003e\n\u003ch2\u003eOrdering \u0026amp; Bulk Pricing\u003c\/h2\u003e\n\u003cp\u003eSKU 6321 ships 12 tubes per bag, with a master case of 72 units across 6 bags. Procurement officers can place standing or volume orders through LabSupplies.com to support recurring lab demand. Contact our team for institutional purchasing, quotes, and case-quantity pricing on Globe Scientific consumables.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat material are these centrifuge tubes made from?\u003c\/h3\u003e\n\u003cp\u003eThese tubes are manufactured from polypropylene (PP), which offers broad chemical resistance and mechanical durability for centrifugation and general lab handling.\u003c\/p\u003e\n\u003ch3\u003eDoes the cap come attached to the tube?\u003c\/h3\u003e\n\u003cp\u003eYes. Each tube features an attached screw cap, keeping the closure with the vessel and reducing the chance of misplaced caps during processing.\u003c\/p\u003e\n\u003ch3\u003eHow many tubes are included per order unit?\u003c\/h3\u003e\n\u003cp\u003eSKU 6321 is sold in bags of 12 tubes. A full master case contains 72 units across 6 bags. Contact LabSupplies.com for case ordering details.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific 30mL Oak Ridge Round Bottom Centrifuge Tube with Attached Screw Cap\",\n  \"sku\": \"6321\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Globe Scientific\"\n  },\n  \"description\": \"Centrifuge Tube, 30mL, Oak Ridge Round Bottom Style, Attached Screw Cap, PP, 12\/Bag.\",\n  \"url\": \"https:\/\/labsupplies.com\/products\/globe-scientific-6321-centrifuge-tube-30ml-oak-ridge-round\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"115.50\",\n    \"url\": \"https:\/\/labsupplies.com\/products\/globe-scientific-6321-centrifuge-tube-30ml-oak-ridge-round\",\n    \"availability\": \"https:\/\/schema.org\/InStock\"\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What material are these centrifuge tubes made from?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These tubes are manufactured from polypropylene (PP), which offers broad chemical resistance and mechanical durability for centrifugation and general lab handling.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the cap come attached to the tube?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. 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