Finding a reliable test tube rack for 13–16 mm tubes helps keep your lab organized and safe. The following selections emphasize durability, chemical resistance, and space-saving designs suitable for water baths, fume hoods, and compact benches. Each option is designed to hold 13–16 mm tubes in a compact format, with several choices offering 2×6, 3×? and 6×? configurations to fit limited spaces.
| Product | Tube Range | Format |
|---|---|---|
| SP Bel-Art Poxygrid “Half-Size” Test Tube Rack (F18788-1601) | 13–16 mm | 6 × 4 |
| uxcell Acrylic Test Tube Holder Rack 6 Wells (10 mL Tubes, 13–16 mm) | 13–16 mm | 6 wells |
| Incontesta Acrylic Test Tube Holder Rack 2×6 Wells (13–16 mm) | 13–16 mm | 2 × 6 wells |
| EISCO Blue Epoxy Coated Steel Wire Rack | 10–13 mm | 6 × 6 |
| uxcell Acrylic Test Tube Holder Lab Stand Rack 2×6 Wells (13–16 mm) | 13–16 mm | 2 × 6 wells |
Note: This guide emphasizes racks compatible with 13–16 mm tubes and related sizes. Each product page provides exact measurements and compatibility notes. Images link to the product pages for quick viewing and purchase decisions.
SP Bel-Art Poxygrid Half-Size 13–16 mm Tubes

Durable and smooth coating is impervious to organic solvents, salts, weak acids and weak alkalis. The Poxygrid half-size format saves space and is ideal for use in water baths, under fume hoods, and other limited-space locations. This rack holds 13–16 mm tubes in a 6 × 4 configuration, combining compactness with robust support for routine lab workflows.
uxcell Acrylic Test Tube Holder Rack 6 Wells

Made of lightweight acrylic, this 6-well rack is designed for 13–16 mm tubes, with a compact footprint suitable for space-limited labs. Dimensions are 136 mm by 50 mm by 80 mm. It helps keep tubes organized and easy to transport, though users should verify tube diameter and height before ordering.
Incontesta 2×6 Wells Acrylic Tube Holder (13–16 mm)

Premium acrylic construction provides a sturdy, lightweight platform for lab experiments. Sized at 138 mm x 57 mm x 75 mm, this 2×6 rack fits 13–16 mm tubes and is designed for compact spaces while maintaining neat, orderly arrangement of tubes.
EISCO Blue Epoxy Coated Steel Wire Rack (6×6)

Epoxy-coated steel wire racks provide chemical and corrosion resistance with a protective, smooth finish. The 6 × 6 format accommodates a larger grid for 10–13 mm tubes, offering stability and durability in environments with mild chemical exposure.
uxcell Acrylic Test Tube Holder Lab Stand 2×6 Wells

This acrylic stand provides 13–16 mm tube compatibility in a compact 2×6 layout. Its lightweight design includes a protective surface layer (film) that should be removed prior to use. Dimensions are 136 mm x 50 mm x 80 mm, suitable for bench-top setups where space is at a premium.
SP Bel-Art Poxygrid Half-Size 10–13 mm Tubes

This half-size rack is designed for 10–13 mm tubes and follows the same Poxygrid durability and solvent resistance as the wider 13–16 mm variants. The 6 × 6 configuration makes efficient use of bench space, especially in environments with limited room or under fume hoods.
Buying Guide
- Tube diameter compatibility: Confirm the rack supports 13–16 mm tubes or choose a close alternative (10–13 mm) if your tubes fall outside the 13–16 mm range.
- Material and chemical resistance: Options include acrylic (lightweight, clear) and epoxy-coated steel (more rigid and durable in harsh solvents). Consider solvent exposure, cleaning routines, and sterilization needs.
- Rack format and capacity: Decide between 2×6, 6×4, or 6×6 layouts based on available space and workflow. Larger grids provide more tubes but require more bench space.
- Stability and handling: Look for solid base designs, non-slip feet, and smooth coatings to reduce snagging and spills during transport or washing.
- Ease of cleaning: Materials like acrylic and epoxy coatings respond differently to cleaning agents. Ensure the rack can be cleaned without degrading the finish.
- Temperature and immersion compatibility: If racks are used in water baths or with heated samples, verify temperature tolerance and chemical compatibility to avoid warping or degradation.
- Acrylic versus metal: Acrylic racks are lighter and transparent for quick visual checks; metal racks offer higher rigidity and durability but may require more care to prevent corrosion in aggressive environments.
- Special considerations: Some racks come with protective surface films on acrylic; remove films before use. Check exact internal distances to ensure 13–16 mm tubes fit comfortably without binding.