21-Position 30 mm Test Tube Rack — Polypropylene Copolymer, White, Unassembled (240-3204-W8SI)
This Caplugs® Evergreen test tube rack holds 21 standard 30 mm tubes in a stable, color-coded white array, constructed from chemical-resistant polypropylene copolymer (PPC) for demanding clinical, research, and industrial laboratory environments. Supplied as an individual, unassembled unit, the rack ships and stores compactly and assembles quickly for immediate bench use. The white finish promotes label visibility and supports organized, multi-rack workstation layouts in clinical chemistry, hematology, microbiology, and cell culture settings.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3204-W8SI |
| Product Type | Test Tube Rack |
| Tube Size | 30 mm |
| Number of Positions | 21 |
| Material | Polypropylene Copolymer (PPC) |
| Color | White |
| Format | Individual unit, unassembled |
| Pack Size | 1 rack/unit |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Lot Numbered | Yes |
| Country of Origin | USA |
Applications
- Clinical chemistry: organizing 30 mm sample and reagent tubes during batched analysis workflows
- Hematology and microbiology: stable tube holding during incubation, staining, or processing steps
- Blood bank and serology: multi-rack workstation layouts with color-coded rack identification
- Cell culture and research laboratories: consolidating culture tubes during preparation or observation
- Industrial quality control: organizing test tubes for inspection, sampling, or reagent preparation
- Autoclave or chemical disinfection cycles for reusable rack workflows in regulated environments
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers and saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, IPA) | Good — short-term contact |
| Common laboratory disinfectants | Good |
| Autoclaving (steam sterilization) | Compatible |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen racks are manufactured from BPA-free, phthalate-free polypropylene copolymer resin and are lot-numbered for full traceability in CAP-, CLIA-, and ISO 15189-accredited laboratories. The unassembled, individual-unit format lets procurement teams purchase the exact quantity required for their workstation configurations without overstocking. LabSupplies.com is an authorized dealer of Caplugs® Evergreen products and ships from USA inventory, with tiered volume pricing available for high-quantity institutional and grant-funded orders.
Frequently Asked Questions
Does this rack require any tools to assemble?
No — the rack is designed for tool-free assembly and disassembly, making it quick to set up for bench use and easy to break down for compact storage or transport between workstations.
Can these racks be autoclaved for reuse?
Yes. Polypropylene copolymer is autoclave-compatible, so these racks can withstand standard steam sterilization cycles, making them suitable for reusable applications in sterile or regulated laboratory environments.
What tube diameter does this rack accept?
The rack is designed for 30 mm diameter test tubes, including standard culture tubes and clinical chemistry tubes in that format. Verify your tube outer diameter before ordering to confirm fit.
Why is the rack supplied unassembled?
The unassembled format reduces shipping volume and allows more efficient storage in stockrooms and supply cabinets. The racks assemble quickly and can be disassembled again when not needed, reducing clutter at the bench.