5–200 µL Pipet Tips, Two-Step Tiered, PP, Natural, Oxford/MLA Compatible — 230-1091-03K | 1000/Bag | Caplugs® Evergreen

Quick Reference

Technical Narrative

The Caplugs® Evergreen 230-1091-03K provides 5–200 µL Two-Step Tiered PP Pipet Tips, 1000/Bag, as replacement tips for MLA® / Abbott® / Pfizer® / Quickpette® pipettors. The two-step tiered geometry features a stepped fitting profile that engages positively with the pipettor cone, providing a secure seal and repeatable tip ejection — the two steps accommodate slight variation in pipettor cone diameter across the supported brands. These tips replace the OEM tips for MLA, Abbott, Pfizer, and Quickpette instruments in clinical and research laboratory settings at below-OEM pricing.

PP: chemical resistance to standard aqueous and mildly organic lab samples, low extractables, compatible with standard pipettor autoclave sterilization if needed (tips only — verify pipettor compatibility). Non-Sterile. BPA-free,

Procurement economics: $43.75/Bag (1000 tips), $0.0438/tip. Related: 230-1092-Y3K (250-500 µL Yellow Oxford®/Abbott®/Pfizer®/Quickpette® 1000/Bag). LabSupplies.com ships from USA inventory, typically same business day.

Technical Specifications

Two-Step Tiered Pipet Tip (5–200 µL) Applications

The is compatible with MLA® / Abbott® / Pfizer® / Quickpette® pipettors as a replacement tip for the following workflows.

Chemical Resistance — PP Pipet Tip

Compatibility reference at typical laboratory conditions.

Clinical & Research Laboratory Applications

Caplugs® Evergreen 5–200 µL two-step tiered PP pipet tips serve clinical laboratories and analytical facilities using MLA, Abbott, Pfizer, or Quickpette pipettors as cost-effective OEM replacements. These instruments are used extensively in clinical chemistry analyzers and manual pipetting workflows for serum, plasma, and urine sample preparation, reagent dispensing, and sample transfer steps. The two-step tiered geometry provides secure positive-seal engagement across all four compatible pipettor brands despite slight dimensional differences in cone taper between manufacturers. The non-sterile 1000/Bag format is appropriate for general bench use where sterility is not a requirement.

U.S. Manufacturing, Quality & Institutional Procurement

Caplugs® 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.

LabSupplies.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 request a written quote or speak with a product specialist directly from our sales engineering team.

Frequently Asked Questions

Are the pipet tips sterile?

No. Non-Sterile — packed 1000/Bag for general bench use.

Are these tips compatible with all four brands listed (MLA® / Abbott® / Pfizer® / Quickpette®)?

The two-step tiered geometry is designed to fit the pipettor cone dimensions of MLA, Abbott, Pfizer, and Quickpette pipettors. Verify fit with your specific pipettor model before switching from OEM tips — test one bag on your instrument and confirm seal, tip retention, and ejection before committing to bulk purchase.

What does 'Two-Step Tiered' mean for these pipet tips?

Two-step tiered refers to the tip's fitting geometry: instead of a smooth taper, the tip has two stepped (tiered) fitting surfaces that engage at two distinct diameters on the pipettor cone. This provides a more positive mechanical lock than a simple taper, improving seal reliability and reducing tip-off force — ensuring tips don't fall off during sample transfer or centrifugation.