{"product_id":"caplugs-240-6388-r30-96-well-microcentrifuge-rack-pp-red","title":"1.5 mL Tube Racks, HDPE, Red, Eppendorf® Compatible — 240-6388-R30 | 5\/Pack | Caplugs® Evergreen","description":"\u003ch2\u003e1.5 mL \/ 2.0 mL Microcentrifuge Tube Racks — 96-Position, PP, Red, 5\/Pack (240-6388-R30)\u003c\/h2\u003e\n\u003cp\u003eThese 96-position polypropylene tube racks hold standard 1.5 mL and 2.0 mL microcentrifuge tubes in an 8 × 12 grid with 9 mm center-to-center well spacing that mirrors the SBS microplate footprint. Molded in red — a color compounded directly into the PP matrix for permanent stability — they align with the CLSI H3 color convention for no-additive serum tubes, making them a natural fit for clinical chemistry and immunoassay sample staging. Supplied non-sterile in packs of five, part number 240-6388-R30 is autoclavable at 121 °C and compatible with UV decontamination for clean-bench environments.\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\u003e240-6388-R30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e96 positions, 8 × 12 grid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWell Spacing\u003c\/td\u003e\n\u003ctd\u003e9 mm center-to-center (SBS microplate footprint)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Compatibility\u003c\/td\u003e\n\u003ctd\u003e1.5 mL and 2.0 mL microcentrifuge tubes (11 mm OD)\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\u003eColor\u003c\/td\u003e\n\u003ctd\u003eRed (pigment compounded into PP matrix)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor Convention\u003c\/td\u003e\n\u003ctd\u003eCLSI H3 — no-additive\/serum tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Lid\u003c\/td\u003e\n\u003ctd\u003e300-6388 PPC Natural (sold separately, 5\/Pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e5\/Pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave Compatibility\u003c\/td\u003e\n\u003ctd\u003e121 °C \/ 15 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Decontamination\u003c\/td\u003e\n\u003ctd\u003eCompatible (254 nm standard cycle)\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\u003eClinical chemistry and serology sample staging — red color aligns with CLSI H3 serum-tube convention for immediate visual identification\u003c\/li\u003e\n\u003cli\u003eSTAT priority triage — red racks signal urgent sample processing in standard clinical laboratory SOPs without secondary labeling\u003c\/li\u003e\n\u003cli\u003ePCR setup and nucleic acid workflow organization across the full 96-position plate format\u003c\/li\u003e\n\u003cli\u003eCentrifuge loading and post-spin sample management for 1.5 mL and 2.0 mL microcentrifuge tubes\u003c\/li\u003e\n\u003cli\u003eAutomated liquid-handling integration — 9 mm well spacing and SBS footprint allow direct addressing by 96-channel pipetting workstations\u003c\/li\u003e\n\u003cli\u003eSample archiving and incubation storage, optionally covered with the compatible 300-6388 PPC lid for dust protection and rack stacking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 8 × 12 grid layout conforms to the standard SBS microplate footprint, enabling direct integration with automated liquid-handling platforms and 96-channel pipetting workstations that address microcentrifuge tubes in plate-coordinate format. Wells accept 11 mm OD tubes — including Eppendorf®-style 1.5 mL and 2.0 mL microcentrifuge tubes — with positive retention that supports smooth one-handed tube management during rapid pipetting. The optional 300-6388 PPC Natural lid (sold separately in a matching 5\/Pack) fits this rack for dust protection during incubation steps and allows loaded racks to be stacked. For labs that use a full color-coding scheme, the 240-6388 family is also available in Natural, Blue, Orange, Green, Lavender, and Yellow, allowing complete color-scheme procurement from a single vendor.\u003c\/p\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 and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e70% ethanol (disinfection wipes)\u003c\/td\u003e\n\u003ctd\u003eGood — routine disinfection compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bleach \/ hypochlorite\u003c\/td\u003e\n\u003ctd\u003eGood — short-term decontamination compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave (121 °C \/ 15 psi)\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV decontamination (254 nm)\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents \/ aromatic solvents\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, these Caplugs® Evergreen racks are molded from virgin polypropylene under ISO 9001 quality management, ensuring consistent well geometry and dimensional stability across every production lot. The red pigment is compounded directly into the PP matrix — not applied as a surface coating — so color integrity is maintained through autoclave cycles, alcohol wipes, and UV decontamination without risk of pigment leaching. LabSupplies.com is an authorized dealer of Caplugs® Evergreen laboratory consumables and ships from USA inventory, with tiered pricing available for high-volume institutional and grant-funded procurement programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these racks autoclavable?\u003c\/strong\u003e\u003cbr\u003eYes. The polypropylene construction is compatible with standard steam autoclaving at 121 °C \/ 15 psi, allowing decontamination between experiments or before use in sensitive workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill standard Eppendorf-style 1.5 mL tubes fit securely?\u003c\/strong\u003e\u003cbr\u003eYes. The wells are sized for 11 mm OD microcentrifuge tubes — the standard diameter for 1.5 mL and 2.0 mL Eppendorf-style tubes — and provide positive retention without requiring excessive insertion force.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these racks be used on automated liquid-handling platforms?\u003c\/strong\u003e\u003cbr\u003eThe 8 × 12 grid with 9 mm center-to-center well spacing matches the SBS microplate footprint, allowing direct integration with 96-channel pipetting workstations that address tubes in plate-coordinate format. Verify your specific instrument's labware library for exact configuration details.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a lid available to cover loaded racks during storage or incubation?\u003c\/strong\u003e\u003cbr\u003eYes. The 300-6388 PPC Natural lid (sold separately in a 5\/Pack) is designed to fit this rack, providing dust protection and enabling stacking of loaded racks during incubation or storage steps.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"1.5 mL \/ 2.0 mL Microcentrifuge Tube Racks, 96-Position, PP, Red, 5\/Pack — Caplugs® Evergreen 240-6388-R30\",\"sku\":\"2406388R30E1\",\"mpn\":\"240-6388-R30\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Red\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"41.10\",\"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 racks autoclavable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The polypropylene construction is compatible with standard steam autoclaving at 121 °C \/ 15 psi, allowing decontamination between experiments or before use in sensitive workflows.\"}},{\"@type\":\"Question\",\"name\":\"Will standard Eppendorf-style 1.5 mL tubes fit securely?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The wells are sized for 11 mm OD microcentrifuge tubes — the standard diameter for 1.5 mL and 2.0 mL Eppendorf-style tubes — and provide positive retention without requiring excessive insertion force.\"}},{\"@type\":\"Question\",\"name\":\"Can these racks be used on automated liquid-handling platforms?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 8 × 12 grid with 9 mm center-to-center well spacing matches the SBS microplate footprint, allowing direct integration with 96-channel pipetting workstations that address tubes in plate-coordinate format. 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