10–200 µL Pipet Tips, Two-Step Tiered, PP, Yellow — 230-1689-Y3K | 1,000/Bag | Caplugs® Evergreen

10–200 µL Visu-Chek™ Two-Step Tiered Pipet Tips — PP, Yellow, Multi-Fitting (230-1689-Y3K)

These 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.

Technical Specifications

Applications

• PCR and qPCR master mix preparation requiring lot-certified nuclease-free tips
• ELISA plate loading and serial dilution across the full 10–200 µL range
• Clinical diagnostic liquid handling and sample transfer
• Quality-control and immunoassay workflows demanding pyrogen-free consumables
• Color-coded tip management systems where yellow conventionally denotes the 10–200 µL range

Compatibility

The 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.

Chemical Resistance

Quality & Procurement

Made 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.

Frequently Asked Questions

Are these tips certified nuclease-free?
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.

Will these tips fit my Eppendorf or Gilson pipettor?
The 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.

Why are these tips yellow?
Yellow 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.

Are these tips autoclavable?
Polypropylene 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.