{"product_id":"globe-tip-154135","title":"1000 µL PosiStop Pipette Tips, Low-Retention, Graduated, Sterile — 4 Packaging Formats, 1000\/Pack | Globe Scientific","description":"\u003ch2\u003e1000 µL PosiStop Low-Retention Pipette Tips, Graduated, Sterile — 1000 Tips per Pack\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGlobe Scientific PosiStop 1000 µL Pipette Tips\u003c\/strong\u003e deliver consistent sealing and low-retention dispensing for demanding bench workflows. The graduated, sterile design suits aqueous reagent transfer, PCR and qPCR setup, and serial dilution where carryover and sample loss must stay minimal.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePosiStop low-retention pipette tip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e1000 µL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eVirgin polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eUniversal-fit tip; PosiStop positive-seal design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eGraduated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile (all variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000 tips per pack (bulk bag, or 6 × 96 racks\/refills per box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Packagings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBulk Bag, Sterile (1000\/bag)\u003c\/td\u003e\n\u003ctd\u003e154135S\u003c\/td\u003e\n\u003ctd\u003e$51.80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRacked, Sterile (96\/rack, 6 racks\/box)\u003c\/td\u003e\n\u003ctd\u003e154135RS\u003c\/td\u003e\n\u003ctd\u003e$66.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreenRack, Sterile (96\/rack, 6 racks\/box)\u003c\/td\u003e\n\u003ctd\u003e154135ERS\u003c\/td\u003e\n\u003ctd\u003e$66.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefill, Sterile (96\/refill, 6 refills\/box)\u003c\/td\u003e\n\u003ctd\u003e154135FS\u003c\/td\u003e\n\u003ctd\u003e$43.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR and qPCR reaction setup requiring minimal sample carryover\u003c\/li\u003e\n\u003cli\u003eSerial dilution of buffers, standards, and reagents at the 1 mL scale\u003c\/li\u003e\n\u003cli\u003eTransfer of viscous or protein-rich samples where low retention preserves yield\u003c\/li\u003e\n\u003cli\u003eCell culture media and reagent aliquoting under sterile conditions\u003c\/li\u003e\n\u003cli\u003eGenomics and NGS library prep handling precious nucleic acid samples\u003c\/li\u003e\n\u003cli\u003eAutomated and manual liquid handling for routine clinical and research assays\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eGlobe Scientific PosiStop tips ship from US inventory through labsupplies.com, an authorized Globe Scientific dealer. Bags and boxes carry lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available on request.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre all four packaging formats sterile?\u003c\/h3\u003e\n\u003cp\u003eYes. The bulk bag, racked, GreenRack, and refill formats are all supplied sterile and graduated at 1000 µL, so you can match packaging to workflow without changing tip specification.\u003c\/p\u003e\n\u003ch3\u003eWhat does the low-retention surface do?\u003c\/h3\u003e\n\u003cp\u003eThe low-retention polypropylene reduces liquid film clinging to the tip wall, improving recovery of viscous, protein-containing, or detergent-based samples and lowering volume loss across pipetting steps.\u003c\/p\u003e\n\u003ch3\u003eWhat is the GreenRack option?\u003c\/h3\u003e\n\u003cp\u003eThe GreenRack (154135ERS) is a more material-efficient rack design that holds the same 96 tips per rack across 6 racks per box, supporting sustainability goals while keeping tip performance identical.\u003c\/p\u003e\n\u003ch3\u003eHow many tips come in each pack?\u003c\/h3\u003e\n\u003cp\u003eEvery format totals 1000 tips: the bulk bag holds 1000 loose tips, while the racked, GreenRack, and refill boxes each contain six units of 96 tips.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific PosiStop 1000 µL Low-Retention Pipette Tips, Graduated, Sterile\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"1000 µL PosiStop low-retention, graduated, sterile pipette tips in bulk bag, racked, GreenRack, and refill formats. 1000 tips per pack.\",\n  \"sku\": [\"154135S\", \"154135RS\", \"154135ERS\", \"154135FS\"],\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"43.60\",\n    \"highPrice\": \"66.40\",\n    \"offerCount\": 4\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are all four packaging formats sterile?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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