{"product_id":"caplugs-230-1689-y3k-200l-pipet-tips-po-yellow","title":"10–200 µL Pipet Tips, Two-Step Tiered, PP, Yellow — 230-1689-Y3K | 1,000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e10–200 µL Visu-Chek™ Two-Step Tiered Pipet Tips — PP, Yellow, Multi-Fitting (230-1689-Y3K)\u003c\/h2\u003e\n\u003cp\u003eThese 10–200 µL polypropylene pipet tips from Caplugs® Evergreen's Visu-Chek™ line are precision-molded with a two-step tiered, multi-fitting geometry that seats securely across the widest range of pipettor brands in this volume class. Supplied non-sterile in bags of 1,000, they are lot-certified RNase-free, DNase-free, and pyrogen-free — meeting the purity requirements for nucleic acid work, immunoassay setup, and clinical diagnostic liquid handling. The integrated Visu-Chek™ graduated scale printed along the tip wall provides direct volume confirmation during aspiration, reducing pipetting errors in high-throughput workflows.\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\u003e230-1689-Y3K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSub-Brand\u003c\/td\u003e\n\u003ctd\u003eVisu-Chek™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume Range\u003c\/td\u003e\n\u003ctd\u003e10–200 µL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip Style\u003c\/td\u003e\n\u003ctd\u003eTwo-Step Tiered, Multi-Fitting\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\u003eYellow\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\u003e1,000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eRNase-free, DNase-free, Pyrogen-free (lot tested)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalates\u003c\/td\u003e\n\u003ctd\u003eBPA-free; no phthalate plasticizers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA (California)\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\u003ePCR and qPCR master mix preparation requiring lot-certified nuclease-free tips\u003c\/li\u003e\n\u003cli\u003eELISA plate loading and serial dilution across the full 10–200 µL range\u003c\/li\u003e\n\u003cli\u003eClinical diagnostic liquid handling and sample transfer\u003c\/li\u003e\n\u003cli\u003eQuality-control and immunoassay workflows demanding pyrogen-free consumables\u003c\/li\u003e\n\u003cli\u003eColor-coded tip management systems where yellow conventionally denotes the 10–200 µL range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe two-step tiered, multi-fitting shaft geometry of these tips is validated to form a positive, leak-free seal across a broad range of pipettor brands and cone diameters in the 10–200 µL class. Confirmed compatible instruments include the Eppendorf® Research and Reference Plus series, Gilson Pipetman® P200, Thermo Fisher Finnpipette® F1\/F2, VWR® Signature™, Labnet® MultiPette, Oxford® BenchMate, and Socorex Acura® pipettors. Because manufacturers offer multiple shaft geometries across their product lines, it is best practice to perform a five-tip aspiration seal check when first introducing these tips to any pipettor model not previously qualified in your laboratory.\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\u003eEthanol (\u0026lt;70%)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone \/ chloroform \/ aromatic solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave sterilization\u003c\/td\u003e\n\u003ctd\u003eCompatible (polypropylene is autoclavable)\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's California facility, these tips are manufactured under ISO 9001 quality management from virgin polypropylene resin that is BPA-free and free of phthalate plasticizers. Yellow pigment is compounded directly into the PP matrix — not applied as a surface coating — ensuring color stability throughout the tip's service life without risk of leachable dye contamination. Each production lot is independently tested and certified RNase-free, DNase-free, and pyrogen-free. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered pricing available for institutional and grant-funded laboratories purchasing in volume.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tips certified nuclease-free?\u003c\/strong\u003e\u003cbr\u003eYes — every production lot is independently tested and certified RNase-free, DNase-free, and pyrogen-free, making them suitable for PCR setup, nucleic acid transfers, and other contamination-sensitive workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these tips fit my Eppendorf or Gilson pipettor?\u003c\/strong\u003e\u003cbr\u003eThe two-step tiered, multi-fitting geometry is validated for Eppendorf® Research\/Reference Plus and Gilson Pipetman® P200 pipettors, among others. As a best practice, perform a five-tip aspiration seal check when qualifying any new tip with a specific pipettor model in your lab.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are these tips yellow?\u003c\/strong\u003e\u003cbr\u003eYellow is a widely adopted color-coding convention for the 10–200 µL volume range and integrates with ISO 8655-aligned tip management systems, allowing bench staff to select the correct tip by color without consulting labeling.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tips autoclavable?\u003c\/strong\u003e\u003cbr\u003ePolypropylene is inherently autoclavable, so the tips can withstand standard steam sterilization cycles if your protocol requires sterilization prior to use. Note that the tips are supplied non-sterile; autoclave them in a suitable container per your laboratory's SOP.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"10–200 µL Visu-Chek™ Two-Step Tiered Pipet Tips, PP, Yellow, 1,000\/Bag — Caplugs® Evergreen 230-1689-Y3K\",\"sku\":\"230-1689-Y3K\",\"mpn\":\"230-1689-Y3K\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Yellow\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"62.30\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tips certified nuclease-free?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — every production lot is independently tested and certified RNase-free, DNase-free, and pyrogen-free, making them suitable for PCR setup, nucleic acid transfers, and other contamination-sensitive workflows.\"}},{\"@type\":\"Question\",\"name\":\"Will these tips fit my Eppendorf or Gilson pipettor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The two-step tiered, multi-fitting geometry is validated for Eppendorf® Research\/Reference Plus and Gilson Pipetman® P200 pipettors, among others. 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