13 mm, 90-Position Test Tube Rack — PPC, Blue, Unassembled (240-3200-B8SI)
These blue polypropylene copolymer test tube racks hold 90 standard 13 mm tubes and are supplied as individual, unassembled units for compact storage and flexible quantity purchasing. The high-density 90-position layout keeps clinical, research, and industrial laboratory workstations organized, while the blue color allows immediate visual identification in multi-rack environments where racks are sorted by assay type, sample batch, or department. Made in USA, these racks deliver the impact resistance and broad chemical durability expected of PPC construction in demanding reusable-labware applications.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3200-B8SI |
| Product Type | Test Tube Rack |
| Tube Size | 13 mm |
| Number of Positions | 90 |
| Material | Polypropylene Copolymer (PPC) |
| Color | Blue |
| Format | Individual, Unassembled |
| Pack Size | 1 rack/unit |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- High-density organization of 13 mm test tubes and culture tubes during processing, incubation, or storage
- Clinical chemistry, hematology, and microbiology workstations requiring stable, organized tube holding
- Blood bank and specimen-processing workflows where color-coded rack assignment by batch or specimen category improves throughput and reduces error
- Research laboratory benchtops with multiple concurrent assays requiring clear rack-to-assay separation
- Industrial quality control environments needing durable, reusable tube organization
- CAP-, CLIA-, and ISO 15189-regulated laboratories that require lot-traceable consumables
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers and saline solutions | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) — disinfection concentrations | Good — suitable for routine surface disinfection |
| Common laboratory disinfectants (bleach solutions, quaternary ammonium) | Good |
| Autoclave sterilization | Compatible |
| Chlorinated solvents (chloroform, methylene chloride) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, Caplugs® Evergreen tube racks are manufactured from BPA-free, phthalate-free polypropylene copolymer and are lot-numbered for full traceability in regulated laboratory environments. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, with tiered pricing available for high-volume institutional, hospital, and grant-funded laboratory purchasing. The individual-unit format of part number 240-3200-B8SI allows procurement teams to order the precise quantity needed without committing to bulk-case minimums.
Frequently Asked Questions
What tube diameter do these racks accept?
These racks are designed for 13 mm diameter test tubes and culture tubes. Tubes of a significantly different outer diameter may not seat securely, so confirm your tube's outer diameter before ordering.
Do the racks arrive ready to use, or do they require assembly?
They are supplied unassembled, which reduces shipping volume and allows compact storage. Assembly is straightforward and requires no tools; racks can also be disassembled for storage or transport when not in use.
Can these racks be autoclaved between uses?
Yes — polypropylene copolymer is autoclave-compatible, making these racks suitable for reusable applications where periodic sterilization is required. They arrive non-sterile.
Why choose blue racks when other colors are available?
Blue color-coding allows multi-rack workstations to assign a distinct rack color to each assay type, sample batch, specimen category, or department, reducing mix-up risk without any additional labeling. If your workflow already uses a color-coding convention, select the rack color that aligns with your existing system.