1.5 mL / 2.0 mL Microcentrifuge Tube Racks — 96-Position, Lavender PP, 5/Pack (240-6388-L30)
These 96-position polypropylene tube racks hold 1.5 mL and 2.0 mL microcentrifuge tubes in an 8 × 12 grid with 9 mm center-to-center well spacing that matches the standard SBS microplate footprint. Molded in lavender to align with the CLSI H3 color convention for EDTA-anticoagulated specimens, they are the natural choice for hematology staging benches, CBC/diff pre-processing, and EDTA whole-blood DNA extraction workflows. Part number 240-6388-L30 ships non-sterile in a convenient 5/Pack configuration, and a compatible polypropylene lid (300-6388, sold separately) is available for covered storage and stacking.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-6388-L30 |
| Configuration | 96 positions, 8 × 12 grid |
| Well Spacing | 9 mm center-to-center (SBS microplate footprint) |
| Tube Compatibility | 1.5 mL and 2.0 mL microcentrifuge tubes (11 mm OD) |
| Material | Polypropylene (PP) |
| Color | Lavender |
| Color Convention | EDTA/hematology samples — CLSI H3 |
| Compatible Lid | 300-6388 PPC Natural (5/Pack, sold separately) |
| Sterility | Non-Sterile |
| Pack Size | 5/Pack |
| Autoclave Compatibility | Yes — 121°C / 15 psi |
| UV Decontamination | Yes — 254 nm standard cycle |
| Country of Origin | USA |
Applications
- Hematology sample staging: color-matched lavender racks for EDTA whole-blood tubes at CBC/diff and hematology pre-processing benches
- EDTA whole-blood DNA and RNA extraction workflows in molecular diagnostics and genomics labs
- PCR setup staging and centrifuge loading with 1.5 mL or 2.0 mL microcentrifuge tubes
- Automated liquid-handling integration — the SBS-footprint 8 × 12 grid addresses tubes in standard plate-coordinate format for 96-channel pipetting workstations
- Sample archiving and cold-storage organization in freezer boxes and walk-in cold rooms
- Multi-user bench environments where dedicated color-per-project or color-per-analyst protocols reduce staging mix-ups
Compatibility
The 9 mm center-to-center well spacing accommodates standard 11 mm OD microcentrifuge tubes — including common 1.5 mL and 2.0 mL formats from Eppendorf® and equivalent suppliers — with positive retention that allows smooth one-handed tube management during rapid pipetting. The SBS-standard 8 × 12 footprint enables direct integration with automated liquid-handling platforms and 96-channel pipetting workstations that address tubes in plate-coordinate format. For covered storage and incubation steps, the 300-6388 PPC Natural lid (sold separately, 5/Pack) fits these racks and supports vertical stacking of loaded units.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| 70% ethanol (disinfection) | Good — standard wipe-down compatible |
| Dilute bleach (sodium hypochlorite) | Good — standard decontamination concentrations |
| Autoclave (121°C / 15 psi) | Compatible |
| UV decontamination (254 nm) | Compatible |
| Acetone / chloroform / aromatic solvents | Not recommended |
Quality & Procurement
Made in USA, these racks are manufactured by Caplugs® Evergreen from virgin polypropylene under ISO 9001 quality management. The lavender color is compounded directly into the PP matrix — not a surface coating — so it remains stable through autoclave cycles, alcohol wipe-downs, and UV decontamination without fading or pigment migration. The complete 240-6388 rack family is available in seven colors (Natural, Blue, Orange, Green, Lavender, Red, and Yellow), enabling a full color-scheme procurement from a single authorized source for multi-user and multi-project bench organization. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume institutional, clinical, and grant-funded laboratory accounts.
Frequently Asked Questions
Can these racks be autoclaved between experiments?
Yes. The polypropylene construction is fully compatible with standard autoclave conditions (121°C / 15 psi), making these racks suitable for decontamination between experiments or between users in shared-lab environments.
Why lavender — is there a practical reason beyond color coding?
Lavender aligns with the CLSI H3 color convention for EDTA-anticoagulated whole-blood specimens, so a lavender rack provides instant visual confirmation that tubes on that rack belong to the EDTA/hematology workflow. In high-throughput clinical and molecular diagnostics settings, tube-to-rack color matching reduces the risk of staging mix-ups without requiring additional labeling.
Do these racks fit automated liquid-handling platforms?
The 8 × 12 well grid uses 9 mm center-to-center spacing that matches the SBS microplate footprint, allowing platforms and 96-channel pipetting workstations that address standard microplates to address these tube racks in the same plate-coordinate format. Always verify deck adapter compatibility with your specific instrument before use.
Is a lid available, and can loaded racks be stacked?
Yes. The 300-6388 PPC Natural lid is sold separately in a 5/Pack and is designed to fit these racks, providing dust protection during storage or incubation steps and enabling vertical stacking of loaded racks to conserve bench and refrigerator space.