MUHWA Multifunctional Trapezoidal Test Tube Rack — 0.2ml to 50ml Universal Lab Rack
The MUHWA trapezoidal test tube rack is a versatile laboratory organizer designed to hold tubes and vials across a wide size range — from 0.2ml PCR strips to 50ml conical centrifuge tubes. Its stepped trapezoidal layout features four tiers of progressively larger holes, providing clear visibility and easy one-handed access to every tube position. Manufactured from high-quality polypropylene, the rack is fully autoclavable (121°C, 15psi, 20 min) and resistant to common laboratory chemicals, making it suitable for daily use in molecular biology, cell culture, clinical chemistry, and general wet-lab workflows.
Key Features
- 7 Hole Diameters for Universal Compatibility — Precision-drilled holes at 5.2mm, 7.6mm, 8.2mm, 10.7mm, 12.1mm, 16.9mm, and 29.3mm accommodate 0.2ml PCR tubes, 0.5ml, 1.2ml, 1.5ml, 2ml microcentrifuge tubes, 5ml, 15ml, and 50ml centrifuge tubes without wobbling.
- Autoclavable Polypropylene Construction — Withstands 121°C autoclave sterilization at 15psi for 20 minutes. Chemically resistant to alcohols, mild acids, bases, and common laboratory disinfectants.
- Trapezoidal Stepped Design — Each tier arranged in descending height order ensures tubes of all sizes are visible and accessible from the front. The stepped profile prevents taller tubes from blocking access to shorter ones.
- Flat-Bottom Small Holes (5.2–10.7mm) — Smaller holes have flat bottoms, enabling the rack to securely hold flat-bottom vials, cryovials, and microcentrifuge tubes upright.
- Stable Non-Slip Base — Wide footprint with anti-skid bottom surface keeps the rack stable even when fully loaded with 50ml tubes.
- Space-Efficient Stacking — Racks nest securely when stacked empty, minimizing storage footprint.
Technical Specifications
| Parameter |
Specification |
| Material |
Polypropylene (PP) |
| Hole Diameters |
5.2 / 7.6 / 8.2 / 10.7 / 12.1 / 16.9 / 29.3 mm |
| Compatible Tubes |
0.2ml PCR, 0.5/1.2/1.5/2/5/15/50ml centrifuge tubes |
| Design |
4-tier trapezoidal (stepped) |
| Autoclavable |
Yes — 121°C, 15psi, 20 min |
| Chemical Resistance |
Alcohols, mild acids/bases, disinfectants |
| Color |
Blue |
| Base |
Non-slip, wide footprint |
| Stackable |
Yes (when empty) |
Applications
- Molecular Biology — Organize PCR tubes, microcentrifuge tubes, and reagent vials during DNA/RNA extraction, PCR setup, and gel electrophoresis.
- Cell Culture — Hold 15ml and 50ml conical tubes during media preparation, cell harvesting, and centrifugation workflows.
- Clinical Chemistry — Arrange sample tubes by patient or test panel; stepped layout allows rapid visual identification.
- General Wet Lab — Universal rack for buffers, aliquots, antibodies, and small reagent bottles.
- Teaching Labs — Durable, autoclavable, easy to clean; ideal for educational environments.
FAQ
Q: Will 50ml conical tubes fit securely?
A: Yes. 29.3mm holes fit standard 50ml Falcon-style tubes. Wide base prevents tipping.
Q: Can this rack be autoclaved repeatedly?
A: Yes. PP rated for repeated 121°C cycles. Allow cooling before reuse.
Q: Flat-bottom vs tapered holes?
A: Holes 5.2–10.7mm are flat-bottom for vials; larger holes are tapered for conical tubes.
Q: Is the blue color just aesthetic?
A: Pigment-integrated polypropylene provides contrast against clear tubes and liquids; won't fade or chip.
