{"product_id":"222-3817-02s-snap-cap-only","title":"16.0 mL Test Tubes, LDPE, Natural — 222-3817-02S | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eQuick Reference\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003ePart Number\u003c\/th\u003e \u003ctd\u003e222-3817-02S\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eProduct\u003c\/th\u003e \u003ctd\u003eTwo-position snap caps for 17 mm PS test tubes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap Material\u003c\/th\u003e \u003ctd\u003eLow-Density Polyethylene (LDPE)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eColor\u003c\/th\u003e \u003ctd\u003eNatural\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eTube Diameter\u003c\/th\u003e \u003ctd\u003e17 mm OD\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eTube Material\u003c\/th\u003e \u003ctd\u003ePS (dimensionally optimized for PS tube tolerances)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap Function\u003c\/th\u003e \u003ctd\u003ePosition 1: vented; Position 2: fully closed\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePack Size\u003c\/th\u003e \u003ctd\u003e1000\/Bag\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSterility\u003c\/th\u003e \u003ctd\u003eSterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eOrigin\u003c\/th\u003e \u003ctd\u003eMade in USA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePrice\u003c\/th\u003e \u003ctd\u003e$67.72\/Bag ($0.0678\/cap)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTechnical Narrative\u003c\/h2\u003e \u003cp\u003eThe Caplugs® Evergreen \u003cstrong\u003e222-3817-02S\u003c\/strong\u003e provides \u003cstrong\u003eSterile LDPE Two-Position Snap Caps for 17 mm PS test tubes\u003c\/strong\u003e, 1000\/Bag, completing the snap cap size set alongside 12 mm PP (222-3812-02P), 12 mm PS (222-3812-02S), and 17 mm PP (222-3817-02P). The 17 mm tube format corresponds to the 16.0 mL round-bottom PS tube and other 17 mm OD PS tube formats. LDPE snap cap optimized for PS tube wall dimensional tolerances.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eLow-Density Polyethylene (LDPE)\u003c\/strong\u003e: flexible snap mechanism for PS tube OD, low extractables, broad chemical resistance. BPA-free, phthalate-free, FDA-compliant, \u003c\/p\u003e \u003cp\u003eProcurement economics: \u003cstrong\u003e$67.72\/Bag (1000 caps)\u003c\/strong\u003e, \u003cstrong\u003e$0.0678\/cap\u003c\/strong\u003e. Full snap cap set: \u003cstrong\u003e222-3817-02P\u003c\/strong\u003e (17 mm PP snap caps 1000\/Bag); \u003cstrong\u003e222-3812-02S\u003c\/strong\u003e (12 mm PS snap caps 1000\/Bag). LabSupplies.com ships from USA inventory, typically same business day.\u003c\/p\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003ePart Number\u003c\/th\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCaplugs Item #\u003c\/th\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eProduct\u003c\/th\u003e \u003ctd\u003eTwo-position snap caps for 17 mm PS test tubes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap Material\u003c\/th\u003e \u003ctd\u003eLow-Density Polyethylene (LDPE)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eColor\u003c\/th\u003e \u003ctd\u003eNatural\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eTube Diameter\u003c\/th\u003e \u003ctd\u003e17 mm OD\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eTube Material\u003c\/th\u003e \u003ctd\u003ePS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap Positions\u003c\/th\u003e \u003ctd\u003ePosition 1: vented (partial open); Position 2: fully closed\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSterility\u003c\/th\u003e \u003ctd\u003eSterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePack Size\u003c\/th\u003e \u003ctd\u003e1000\/Bag\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eBPA \/ Phthalate\u003c\/th\u003e \u003ctd\u003eBPA-Free, Phthalate-Free, Latex-Free\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCountry of Origin\u003c\/th\u003e \u003ctd\u003eUSA \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePrice\u003c\/th\u003e \u003ctd\u003e$67.72\/Bag ($0.0678\/cap)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTwo-Position Snap Cap (17 mm PS Tube) Applications\u003c\/h2\u003e \u003cp\u003eThe snap cap is compatible with 17 mm OD PS test tubes requiring a two-position vented\/closed closure.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eApplication\u003c\/th\u003e \u003cth\u003eSetting \/ Configuration\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003eTube capping\u003c\/th\u003e \u003ctd\u003e17 mm PS round-bottom tube\u003c\/td\u003e \u003ctd\u003eSnap on; two-position for vented or sealed use\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCell culture in tube\u003c\/th\u003e \u003ctd\u003eIncubator, vented position on 17mm PS\u003c\/td\u003e \u003ctd\u003eVented: CO2 exchange; closed: transport\/storage\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCentrifugation\u003c\/th\u003e \u003ctd\u003eClinical centrifuge, vented pressure equalization\u003c\/td\u003e \u003ctd\u003eVented position during spin\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eBulk cap inventory\u003c\/th\u003e \u003ctd\u003eHigh-volume 16 mL tube processing lab\u003c\/td\u003e \u003ctd\u003e1000\/Bag for high-consumption labs\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eReplacement caps\u003c\/th\u003e \u003ctd\u003eReplace damaged 17mm PS tube caps\u003c\/td\u003e \u003ctd\u003eSterile; material-matched for PS tube OD\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSerology \/ flow cytometry\u003c\/th\u003e \u003ctd\u003e16 mL PS tube agglutination or staining\u003c\/td\u003e \u003ctd\u003eSnap re-seals between incubation and reading steps\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eComplete snap cap set\u003c\/th\u003e \u003ctd\u003e12mm PP\/PS + 17mm PP\/PS\u003c\/td\u003e \u003ctd\u003eFour-SKU set covers the main round-bottom tube diameter and material combinations\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eChemical Resistance — Low-Density Polyethylene (LDPE)\u003c\/h2\u003e \u003cp\u003eCompatibility reference for LDPE at typical laboratory conditions.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eReagent \/ Condition\u003c\/th\u003e \u003cth\u003eCompatibility\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003eStandard biological contact matrix.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCell culture media\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003eLow extractables for biological contact.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eEthanol (\u0026lt;70%)\u003c\/td\u003e \u003ctd\u003eGood\u003c\/td\u003e \u003ctd\u003eShort-term compatible.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFormalin (10%)\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003eCompatible for fixation steps.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAcetonitrile\u003c\/td\u003e \u003ctd\u003eLimited\u003c\/td\u003e \u003ctd\u003eAvoid prolonged LDPE contact.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDichloromethane\u003c\/td\u003e \u003ctd\u003eNot Compatible\u003c\/td\u003e \u003ctd\u003eCauses swelling; do not use.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTemperature (snap cap)\u003c\/td\u003e \u003ctd\u003e~60°C max\u003c\/td\u003e \u003ctd\u003eDo not autoclave; sterile single-use.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCryogenic temperature\u003c\/td\u003e \u003ctd\u003eNot Rated\u003c\/td\u003e \u003ctd\u003eLDPE snap cap used at room temp; not designed for LN2 contact.\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eClinical \u0026amp; Research Laboratory Applications\u003c\/h2\u003e \u003cp\u003eCaplugs® Evergreen sterile LDPE two-position snap caps for 17 mm PS test tubes complete the four-SKU snap cap set (12 mm PP\/PS + 17 mm PP\/PS), providing bulk sterile cap supply for the full range of round-bottom PS test tube formats used in clinical serology, flow cytometry, and cell biology laboratories. The 17 mm PS cap is dimensionally optimized for the PS 16 mL round-bottom tube (17×100 mm) and PS tubes of similar OD. Labs standardize on 1000\/Bag separate cap supply to match cap consumption with tube consumption independently, reducing inventory imbalance when tubes and assembled caps are consumed at different rates across different workflows.\u003c\/p\u003e \u003ch2\u003eU.S. Manufacturing, Quality \u0026amp; Institutional Procurement\u003c\/h2\u003e \u003cp\u003eCaplugs® Evergreen products are manufactured in the United States under ISO 9001 quality management from FDA-compliant, food-contact-grade resins. BPA-free, phthalate-free, and latex-free, with material-disclosure documentation supporting CAP, CLIA, and ISO 15189 laboratory accreditation audits.\u003c\/p\u003e \u003cp\u003eLabSupplies.com is an authorized dealer for the full Caplugs Evergreen catalog and ships directly from USA inventory — typically same business day for stocking SKUs. We offer below retail pricing on volume orders, tiered institutional and academic pricing, and direct support for grant-funded laboratories and government procurement channels. Lab managers and procurement officers can \u003ca href=\"#request-sample\"\u003erequest a written quote or speak with a product specialist\u003c\/a\u003e directly from our sales engineering team.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e \u003ch3\u003eAre the snap caps sterile?\u003c\/h3\u003e \u003cp\u003eYes. Sterile — 1000\/Bag.\u003c\/p\u003e \u003ch3\u003eWhat is the complete snap cap size and material set from Caplugs Evergreen?\u003c\/h3\u003e \u003cp\u003eFour SKUs: 12 mm PP (222-3812-02P), 12 mm PS (222-3812-02S), 17 mm PP (222-3817-02P), 17 mm PS . All LDPE, natural, sterile, 1000\/Bag. Select by the OD and material of the test tube in your workflow.\u003c\/p\u003e \u003ch3\u003eWhy is there a separate cap for PS tubes vs PP tubes of the same diameter?\u003c\/h3\u003e \u003cp\u003ePP and PS tubes of the same nominal diameter have slightly different wall thicknesses and OD tolerances due to different material properties. The snap cap's engagement detents are dimensionally optimized for each tube material to ensure reliable two-position function — proper vented engagement and full closure without over-tightness or loose fit.\u003c\/p\u003e \u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"Product\", \"name\": \"Caplugs® Evergreen 222-3817-02S | Two-Position Snap Caps for 17 mm PS Test Tubes, Sterile — LDPE, Natural, 1000\/Bag\", \"sku\": \"222381702SE1\", \"mpn\": \"222-3817-02S\", \"brand\": {\"@type\": \"Brand\", \"name\": \"Caplugs® Evergreen\"}, \"manufacturer\": {\"@type\": \"Organization\", \"name\": \"Caplugs® Evergreen\", \"address\": \"USA\"}, \"material\": \"Low-Density Polyethylene (LDPE)\", \"color\": \"Natural\", \"image\": \"https:\/\/prod-cp-cdn-images.azureedge.net\/catalog\/92300\/9093F9E9-0629-4E5F-B21B-39C8A1BB4B87\/300-3812-02S_03.jpg\", \"description\": \"Caplugs® Evergreen 222-3817-02S: Two-Position Snap Caps for 17 mm PS Test Tubes, Sterile, LDPE, Natural, 1000\/Bag. 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The snap cap's engagement detents are dimensionally optimized for each tube material to ensure reliable two-position function — proper vented engagement and full closure without over-tightness or loose fit.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48567670309096,"sku":"222381702SE1","price":67.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/300-3812-02S_03_df65f4e0-edc7-48e2-8bdd-a66eea716dab.jpg?v=1779053621","url":"https:\/\/labsupplies.com\/products\/222-3817-02s-snap-cap-only","provider":"LabSupplies.com","version":"1.0","type":"link"}