Securely hold a full load of test tubes or centrifuge tubes for 13, 16, 20, 25 and 30mm diameter sizes with Thermo Scientific™ Nalgene™ Unwire™ test tube racks. Moulded in a single piece for exceptional strength and durability, these racks have no coating to chip, peel or rust.

• Smooth finish leaves fewer places for contaminants to lodge; no welds to break, no sharp edges
• Endplates accept large labels for easy identification of samples
• Higher specific gravity than water so it stays submerged in a water bath and won't float
• Withstands most lab chemicals and temperatures up to 121°C for a variety of lab procedures
• Available in six bright colours to help keep samples organised
• 15mL conical tubes fit 20mm racks; 50mL conical fit 30mm racks
• No assembly is required; rack is ready to use