Caplugs® Evergreen 5 mL Round Bottom Test Tubes, 12 x 75 mm, Polystyrene (PS), Blue — 1000/Bag

The Caplugs® Evergreen 5 mL Round Bottom Test Tubes deliver clear, dimensionally consistent polystyrene tubes for routine sample handling, hematology aliquoting, and general bench assays. Molded in a 12 x 75 mm format with a smooth round bottom, these blue tubes provide optical clarity for visual inspection and reliable seating in standard 12 mm racks and analyzer carriers.

Technical Specifications

Applications

• Sample aliquoting and short-term specimen holding at the bench
• Hematology and routine clinical chemistry sample prep
• Flow cytometry sample loading in 12 x 75 mm carriers
• Reagent dispensing and small-volume serial dilutions
• Immunoassay and agglutination setup requiring optical clarity
• General teaching-lab and QC handling where disposability matters

Quality & Procurement

labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these tubes 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 procurement.

Frequently Asked Questions

Are these test tubes sterile?

No. These polystyrene tubes are supplied non-sterile and are intended for general laboratory and disposable handling applications where sterility is not required.

What rack and instrument format do they fit?

The 12 x 75 mm outer dimension fits standard 12 mm tube racks and 12 x 75 mm analyzer carriers, including common flow cytometry sample positions.

Do these tubes include caps?

The listing covers tubes only; no closures are included. Compatible 12 mm caps and stoppers can be ordered separately for covered handling.

How many tubes are in each pack?

Each unit of sale is a bag of 1000 tubes (1000/Bag), priced per pack with tiered pricing available for institutional orders.