{"product_id":"caplugs-300-3022-b20-hdpe-sprocket-screw-cap-15ml-centrifuge-vial-blue","title":"15 mL Centrifuge Tubes, Screw Caps, HDPE, Blue — 300-3022-B20 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eTransport Vial and 15 mL Centrifuge Tube Screw Caps with Sprockets, HDPE, Blue — 300-3022-B20 | 1000\/Bag\u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eQuick Reference — 300-3022-B20\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCap Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eScrew cap with sprocket skirt grip\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSprocket\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRaised skirt ridges for tactile one-hand torque\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBlue\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003evs Plain\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSame thread as 300-3010 plain caps; sprocket adds grip\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTube Compat.\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e15 mL centrifuge tubes; 7 mL transport vials\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eIATA P650\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e✓ Leak-free transport closure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCryo Storage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e✓ -80°C compatible\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAutoclave\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e✓ Compatible (121°C)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1000 \/ Bag\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e$87.90 \/ Bag ($0.0879 \/ cap)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTechnical Narrative\u003c\/h2\u003e \u003cp\u003eThe Caplugs® Evergreen is a blue HDPE screw cap with a sprocket grip skirt for 15 mL centrifuge tubes and 7 mL transport vials — the high-throughput variant of the 300-3010 plain blue cap (300-3010-B2N) with raised sprocket ridges on the skirt that provide tactile grip for consistent one-hand finger torque. Sprocket rings on the cap skirt provide a tactile grip surface for consistent one-hand finger-torque engagement — reducing cap cross-threading in high-speed specimen processing where caps are applied and removed rapidly with gloved hands. The sprocket profile also enables automated cap torquing in tube-capping instruments used in high-throughput clinical and biorepository workflows.\u003c\/p\u003e \u003cp\u003eThe sprocket grip is particularly valuable in three scenarios: (1) high-throughput clinical laboratory workflows where tubes are capped and uncapped rapidly with nitrile-gloved hands — the sprocket profile prevents glove slip that can cause under-torqued caps and incomplete closure; (2) automated tube-capping instruments where the sprocket ridges engage the torque head for consistent, repeatable closure force across all capped tubes in a batch; (3) frozen biorepository tube retrieval where HDPE caps at -80°C can be harder to grip with gloved hands — the sprocket provides the tactile purchase needed for torque removal without tube damage. Blue color mirrors the CLSI H3 citrate anticoagulant convention, designating citrate and coagulation specimen tube batches in color-coded processing workflows.\u003c\/p\u003e \u003cp\u003eAt $87.90 per 1000\/Bag — $0.0879 per cap — the carries a $20.40\/1000 premium over the plain blue cap (300-3010-B2N, $67.50) — justified when grip-torque consistency, automated capping compatibility, or gloved-hand throughput are workflow priorities. For standard bench-top capping without automation, the plain 300-3010-B2N delivers equivalent thread performance at lower cost.\u003c\/p\u003e \u003ch2\u003eTechnical Specifications — Caplugs® Evergreen \u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003cth\u003eValue\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003ePart Number\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCaplugs Item #\u003c\/td\u003e \u003ctd\u003e3003022B20E1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCap Type\u003c\/td\u003e \u003ctd\u003eScrew cap with sprocket grip skirt\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSprocket\u003c\/td\u003e \u003ctd\u003eRaised ridges on skirt for tactile finger torque\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial\u003c\/td\u003e \u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eColor\u003c\/td\u003e \u003ctd\u003eBlue\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003evs Plain 300-3010-B2N\u003c\/td\u003e \u003ctd\u003eSame HDPE thread; sprocket adds grip for $20.40\/1000 premium\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTube Compat.\u003c\/td\u003e \u003ctd\u003eCaplugs® Evergreen 15 mL centrifuge tubes; 240-3007\/240-3010 transport vials\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eIATA P650\u003c\/td\u003e \u003ctd\u003e✓ Leak-free primary container seal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCryo Storage\u003c\/td\u003e \u003ctd\u003e✓ -80°C compatible\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave\u003c\/td\u003e \u003ctd\u003e✓ Compatible (121°C \/ 15 psi)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSterility\u003c\/td\u003e \u003ctd\u003eNon-Sterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003ePack Size\u003c\/td\u003e \u003ctd\u003e1000 \/ Bag\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBPA\/Phthalate\u003c\/td\u003e \u003ctd\u003eBPA-free; no phthalate plasticizers\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCountry of Origin\u003c\/td\u003e \u003ctd\u003eMade in U.S.A. (California)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eSprocket Cap Application Compatibility — \u003c\/h2\u003e \u003cp\u003eThe sprocket cap provides the same HDPE thread compatibility as the 300-3010 plain caps with the added grip advantage of the sprocket skirt for high-throughput and automated workflows:\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eApplication\u003c\/th\u003e \u003cth\u003eTube \/ Specimen Type\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eHigh-throughput tube capping\u003c\/td\u003e \u003ctd\u003eRapid specimen tube capping in clinical labs\u003c\/td\u003e \u003ctd\u003eSprocket grip enables consistent one-hand finger torque\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eGloved-hand tube processing\u003c\/td\u003e \u003ctd\u003eClinical lab gloved specimen handling\u003c\/td\u003e \u003ctd\u003eSprocket profile provides tactile grip through nitrile\/latex gloves\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutomated tube capping\u003c\/td\u003e \u003ctd\u003eTube-capping instruments in lab automation\u003c\/td\u003e \u003ctd\u003eSprocket engages automated torque head for consistent closure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e15 mL centrifuge tube capping\u003c\/td\u003e \u003ctd\u003eReplacement\/color caps for Caplugs® 15 mL tubes\u003c\/td\u003e \u003ctd\u003eSprocket HDPE cap — same thread as 300-3010 plain caps\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTransport vial sealing (secure)\u003c\/td\u003e \u003ctd\u003eIATA P650 biological specimen transport\u003c\/td\u003e \u003ctd\u003eSprocket enables secure finger-torque for transport closure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eColor-coded batch routing\u003c\/td\u003e \u003ctd\u003eBlue cap designates citrate\/coagulation batches\u003c\/td\u003e \u003ctd\u003eBlue sprocket cap visible and grippable in specimen racks\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrozen archive capping\u003c\/td\u003e \u003ctd\u003e-20°C \/ -80°C cryogenic biorepository tubes\u003c\/td\u003e \u003ctd\u003eHDPE cryo stability same as plain caps; sprocket aids thaw removal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eQuality system tube programs\u003c\/td\u003e \u003ctd\u003eCAP\/CLIA accreditation tube closure protocols\u003c\/td\u003e \u003ctd\u003eConsistent sprocket-torqued caps support standardized closure force\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003cem\u003eSprocket caps are compatible with the same tube formats as 300-3010 plain caps. The sprocket skirt adds grip but does not change the thread specification. Request a free sample to confirm fit.\u003c\/em\u003e\u003c\/p\u003e \u003ch2\u003eChemical Resistance — High-Density Polyethylene (HDPE)\u003c\/h2\u003e \u003cp\u003eHDPE provides broad chemical resistance, cryo stability, and autoclave compatibility for demanding tube cap applications.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eReagent \/ Condition\u003c\/th\u003e \u003cth\u003eCompatibility\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eAqueous buffers \/ serum \/ plasma\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eShort-chain alcohols (brief)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDilute acids (\u0026lt;10%)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDMSO (≤10%)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eStorage at -20°C \/ -80°C\u003c\/td\u003e \u003ctd\u003e✓ Suitable — HDPE cryo stability\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave (121°C)\u003c\/td\u003e \u003ctd\u003e✓ Compatible\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eConcentrated organic solvents\u003c\/td\u003e \u003ctd\u003e✗ Not recommended\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003e300-3022 Sprocket Cap vs 300-3010 Plain Cap\u003c\/h2\u003e \u003cp\u003eSame HDPE thread, same tube compatibility — sprocket adds tactile grip:\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003ePart Number\u003c\/th\u003e \u003cth\u003eColor\u003c\/th\u003e \u003cth\u003ePrice\/1000\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eBlue (Sprocket)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e$87.90\u003c\/td\u003e \u003ctd\u003eSprocket grip — high-throughput, gloved, automated capping\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e300-3010-B2N\u003c\/td\u003e \u003ctd\u003eBlue (Plain)\u003c\/td\u003e \u003ctd\u003e$67.50\u003c\/td\u003e \u003ctd\u003eStandard blue — same thread, no sprocket grip\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eLaboratory Applications\u003c\/h2\u003e \u003cp\u003eThe serves high-throughput clinical specimen processing programs capping citrate coagulation tubes; automated tube-capping instrument workflows requiring sprocket-compatible caps; biorepository programs retrieving frozen tubes at -80°C where improved grip on cold caps reduces tube damage; and any workflow where consistent one-hand torque closure on 15 mL centrifuge tubes or transport vials is a priority.\u003c\/p\u003e \u003ch2\u003eU.S. Manufacturing, Quality \u0026amp; Institutional Procurement\u003c\/h2\u003e \u003cp\u003eEvery Caplugs® Evergreen lot is precision-molded at our California manufacturing facility and subject to rigorous dimensional inspection. We supply reference laboratories, hospital systems, biotech firms, and federal procurement offices under institutional pricing programs with blanket-order support and same-day shipping. \u003ca href=\"#request-sample\"\u003eRequest a free sample below\u003c\/a\u003e to validate fit before committing to volume.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions — Caplugs® Evergreen \u003c\/h2\u003e \u003ch3\u003eWhat is the difference between the sprocket cap  and the plain blue cap (300-3010-B2N)?\u003c\/h3\u003e \u003cp\u003eBoth are blue HDPE screw caps with the same thread specification for 15 mL centrifuge tubes and 7 mL transport vials. The difference is the skirt profile: 300-3010-B2N has a smooth skirt; has raised sprocket ridges that provide tactile grip for one-hand finger torque. The sprocket grip improves closure consistency in high-throughput gloved workflows, automated capping, and frozen tube retrieval at -80°C. Cost: 300-3010-B2N $67.50\/1000; $87.90\/1000.\u003c\/p\u003e \u003ch3\u003eIs the sprocket cap compatible with automated tube-capping instruments?\u003c\/h3\u003e \u003cp\u003eYes. The sprocket ridges on the are designed to engage the torque head of automated tube-capping instruments, providing consistent, repeatable closure force across all tubes in a batch. This eliminates the variability in hand-torque force that can result in under- or over-torqued caps in manual capping workflows. Confirm sprocket-to-instrument head compatibility with your specific capping instrument before bulk purchase.\u003c\/p\u003e \u003ch3\u003eWhy is the sprocket cap only available in blue — are other colors available?\u003c\/h3\u003e \u003cp\u003eThe 300-3022 sprocket cap range currently includes blue only. Blue was selected as the first sprocket color because coagulation and citrate specimen batches — the primary use for blue-top tube caps — are common in high-throughput clinical laboratories where the grip advantage of the sprocket profile provides the most workflow value. For other colors with sprocket grip, check with Caplugs® Evergreen for current availability. For plain caps in all 9 colors, see the 300-3010 family.\u003c\/p\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Transport Vial and 15 mL Centrifuge Tube Screw Caps with Sprockets, Non-Sterile, High-Density Polyethylene (HDPE), Blue \\u2014 300-3022-B20 | 1000\/Bag | Caplugs\\u00ae Evergreen\",\n  \"description\": \"Caplugs\\u00ae Evergreen 300-3022-B20. HDPE sprocket screw caps for 15 mL centrifuge tubes and transport vials, blue, 1000\/Bag. Grip-torque. BPA-free. USA.\",\n  \"sku\": \"3003022B20E1\",\n  \"mpn\": \"300-3022-B20\",\n  \"material\": \"High-Density Polyethylene (HDPE)\",\n  \"color\": \"Blue\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs\\u00ae Evergreen\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Caplugs\\u00ae Evergreen\",\n    \"address\": {\n      \"@type\": \"PostalAddress\",\n      \"addressCountry\": \"US\",\n      \"addressRegion\": \"CA\"\n    }\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"87.9\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"LabSupplies\"\n    }\n  },\n  \"additionalProperty\": [\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Pack Size\",\n      \"value\": \"1000 \/ Bag\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Sterility\",\n      \"value\": \"Non-Sterile\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Country of Origin\",\n      \"value\": \"United States\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Cap Type\",\n      \"value\": \"Screw cap with sprocket grip\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Tube Compatibility\",\n      \"value\": \"15 mL centrifuge tubes; 7 mL transport vials\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"BPA Free\",\n      \"value\": \"Yes\"\n    }\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the sprocket cap (300-3022-B20) and the plain blue cap (300-3010-B2N)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Both are blue HDPE screw caps with the same thread specification for 15 mL centrifuge tubes and 7 mL transport vials. The difference is the skirt profile: 300-3010-B2N has a smooth skirt; 300-3022-B20 has raised sprocket ridges that provide tactile grip for one-hand finger torque. The sprocket grip improves closure consistency in high-throughput gloved workflows, automated capping, and frozen tube retrieval at -80\\u00b0C. Cost: 300-3010-B2N $67.50\/1000; 300-3022-B20 $87.90\/1000.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the sprocket cap compatible with automated tube-capping instruments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The sprocket ridges on the 300-3022-B20 are designed to engage the torque head of automated tube-capping instruments, providing consistent, repeatable closure force across all tubes in a batch. This eliminates the variability in hand-torque force that can result in under- or over-torqued caps in manual capping workflows. Confirm sprocket-to-instrument head compatibility with your specific capping instrument before bulk purchase.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is the sprocket cap only available in blue \\u2014 are other colors available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 300-3022 sprocket cap range currently includes blue only. Blue was selected as the first sprocket color because coagulation and citrate specimen batches \\u2014 the primary use for blue-top tube caps \\u2014 are common in high-throughput clinical laboratories where the grip advantage of the sprocket profile provides the most workflow value. For other colors with sprocket grip, check with Caplugs\\u00ae Evergreen for current availability. For plain caps in all 9 colors, see the 300-3010 family.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48567644389608,"sku":"300-3022-B20","price":87.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/300-3022-B20_02.jpg?v=1779052599","url":"https:\/\/labsupplies.com\/products\/caplugs-300-3022-b20-hdpe-sprocket-screw-cap-15ml-centrifuge-vial-blue","provider":"LabSupplies.com","version":"1.0","type":"link"}