Caplugs® Evergreen 4.0 mL Freestanding Round Bottom Sample Cups, Polystyrene, Non-Sterile, Red, 1000/Bag

These 4.0 mL freestanding round bottom sample cups are molded from clear-to-tinted polystyrene and dyed red for fast visual sorting on busy benches. The self-standing base keeps each cup upright during pipetting, sample loading, and short-term aliquot staging across clinical chemistry and general analytical workflows.

Technical Specifications

Applications

• Sample dosing and aliquoting for clinical chemistry analyzers
• Color-coded sample staging to reduce mix-ups across assay runs
• Short-term holding of serum, plasma, or reagent aliquots
• Manual pipetting and dispensing at the bench
• QC and calibrator dispensing in routine lab workflows
• General-purpose specimen handling in research and teaching labs

Quality & Procurement

labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these cups are Made in USA. Each bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for high-volume and recurring orders.

Frequently Asked Questions

Are these sample cups sterile?

No. These cups are supplied non-sterile and are intended for routine analytical, dosing, and aliquoting tasks that do not require a sterile vessel.

What material are the cups made from?

The cups are molded from polystyrene (PS), a rigid, optically clear plastic well suited to aqueous samples and short-term aliquot handling.

Why does the cup have a round bottom yet stand on its own?

The cup combines an interior round-bottom profile, which aids complete sample draw-down, with a freestanding base that holds the cup upright on flat surfaces during loading and pipetting.

How many cups come in a pack?

Each pack contains 1000 cups per bag, sold at one price per bag, with lot numbers for traceability.