{"product_id":"round-bottom-test-tubes-16ml-17-x-100mm-snap-cap-ppc-2222393080e1","title":"16 mL Test Tubes, Round Bottom, PPC, Natural — 222-2393-080 | 25\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e16 mL Round Bottom Test Tubes with Two-Position Snap Caps — PPC, Natural, Sterile, 25\/Bag (222-2393-080)\u003c\/h2\u003e\n\u003cp\u003eThese 16 mL polypropylene copolymer (PPC) round bottom test tubes measure 17 × 100 mm and are supplied sterile and unassembled — tubes and snap caps packaged separately within the bag for assembly immediately before use. The round bottom geometry concentrates cell pellets and precipitates at the tube base for efficient resuspension and aspiration after centrifugation, while the two-position snap cap enables either vented or sealed operation to suit incubation and transport workflows alike.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e222-2393-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e17 × 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eTwo-Position Snap Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eUnassembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e25\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlow cytometry and FACS analysis — the standard 17 × 100 mm round bottom format fits most instrument sample probes directly\u003c\/li\u003e\n\u003cli\u003eImmunofluorescence staining and cell sorting, where round bottom geometry ensures complete pellet recovery after centrifugation\u003c\/li\u003e\n\u003cli\u003eHematology sample preparation and serological \/ agglutination assays requiring a contained, resealable tube\u003c\/li\u003e\n\u003cli\u003eVented incubation of cell cultures or assay reactions using the snap cap's open position, then sealed containment during transport or storage\u003c\/li\u003e\n\u003cli\u003eGeneral specimen collection and sample handling in clinical, research, and biotech environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified facilities from virgin-grade, FDA-registered PPC resin, these tubes are BPA-free and phthalate-free. Lot-level quality controls verify consistent tube geometry, wall thickness, and dimensional uniformity across every bag, supporting traceability requirements under CAP, CLIA, and ISO 15189 accreditation. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume and grant-funded institutions.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes supplied already assembled with the snap caps attached?\u003c\/strong\u003e\u003cbr\u003eNo — part number 222-2393-080 is supplied unassembled, with tubes and two-position snap caps packaged separately within each bag. This preserves sterility and allows assembly immediately before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"two-position snap cap\" mean in practice?\u003c\/strong\u003e\u003cbr\u003eThe snap cap has two distinct locking positions: an open (vented) position that allows gas exchange during cell culture incubation, and a closed (sealed) position that provides containment for transport, centrifugation, or storage. Switching between positions requires only a simple finger press.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used in a centrifuge?\u003c\/strong\u003e\u003cbr\u003eYes — PPC (polypropylene copolymer) offers flexibility and impact resistance suited to centrifugation, and the round bottom concentrates pellets at the base for efficient resuspension. Always confirm your centrifuge rotor's maximum RCF and tube-size compatibility before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes compatible with standard flow cytometry instruments?\u003c\/strong\u003e\u003cbr\u003eThe 17 × 100 mm round bottom format is the standard geometry for most flow cytometer and FACS sample-probe systems. Confirm your specific instrument's tube-dimension requirements against the 17 × 100 mm specification before switching from your current supply.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"16 mL Round Bottom Test Tubes with Two-Position Snap Caps, PPC, Natural, Sterile — 25\/Bag\",\"sku\":\"2222393080E1\",\"mpn\":\"222-2393-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"120.13\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes supplied already assembled with the snap caps attached?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied unassembled, with tubes and two-position snap caps packaged separately within each bag. 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