3.5 mL Caps, Graduated, LDPE, Natural — 222-1580-02I | 500/Bag | Caplugs® Evergreen

Quick Reference

Technical Narrative

The Caplugs® Evergreen 222-1580-02I is a 3.5 mL Graduated Transfer Pipet, sterile, LDPE (Natural), 500/Bag individually packed. The graduated pipet adds printed volume marks on the bulb and/or stem body — allowing the analyst to read approximate volumes (typically in 0.5 mL increments) delivered without a separate measuring vessel. In blood banking and serology, the graduated format allows rapid dispensing of a specific plasma or serum volume to a tube panel without pipetting to a volumetric device first.

Low-Density Polyethylene (LDPE): the defining material for transfer pipets — LDPE's flexibility provides progressive, controllable bulb compression for smooth aspirate and dispense with one hand. LDPE's low extractable profile is suited for direct contact with serum, plasma, whole blood, and biological reagents. Sterile individually packed, no autoclaving required. BPA-free, phthalate-free, FDA-compliant,

Procurement economics: $102.13/Bag, $0.2043/pipet. Full 222-15xx transfer pipet series: Standard (222-1577-02I, 45 µL, 500/Bag); Graduated (, 40 µL, 500/Bag); Blood Bank (222-1585-02I, 40 µL, 500/Bag); Fine Tip (222-1590-02I, 20 µL, 400/Bag); Long Stem (222-1595-02I, 40 µL, 400/Bag). LabSupplies.com ships from USA inventory, typically same business day.

Technical Specifications

3.5 mL Graduated Transfer Pipet Applications

The is suited to the following laboratory workflows where the graduated tip geometry provides the key advantage.

Chemical Resistance — Low-Density Polyethylene (LDPE)

Compatibility reference for LDPE at typical laboratory conditions.

Clinical & Research Laboratory Applications

Caplugs® Evergreen 3.5 mL graduated transfer pipets serve blood banking and serology laboratories requiring approximate volume delivery verification without a separate measuring pipette. The printed graduation marks allow the analyst to confirm that a specific volume (e.g., 1.0 mL plasma, 0.5 mL serum) was transferred without a separate calibrated pipette step — critical for batch crossmatch setups, plasma volume calculations in component therapy, and tube serology protocols where specific serum:cell ratios affect agglutination sensitivity. Manual ELISA coating setups and antibody titration assays use the graduated format to dispense known approximate volumes of antigen or antibody solution across a tube panel before precise dilution.

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 transfer pipets sterile?

Yes. Each pipet is individually sterile-packed. Sterility is maintained until the individual wrapper is opened. Single-use — discard after use.

How accurate are the graduation marks on the graduated transfer pipet?

The graduation marks on LDPE transfer pipets provide approximate volume guidance — typically ±10–15% at each graduation interval. They are suitable for non-critical volume estimation but are not a substitute for calibrated volumetric pipettes in analytical workflows requiring ±1–5% accuracy.

Can LDPE transfer pipets be used with organic solvents?

LDPE is compatible with dilute aqueous reagents, serum, plasma, and standard biological matrices. Short-term contact with ethanol (<70%) or methanol (<50%) is generally acceptable. LDPE is not suitable for acetonitrile, acetone, dichloromethane, chloroform, or concentrated organic solvents — use glass or PTFE instruments for organic solvent transfer.