Feature: APPROPRIATE SIZE：The size of ach rack is about 66mm×209mm×27.2mm. Fit for 1.5ml, 2.0ml PCR tube, microcentrifuge tubes and screw cap vials, vial with a diameter less than 11.4 mm are suitable.SAMPLE SECURITY: Hole of the rack is deep, and the microtube is not easy to turn over; Reasonable hole spacing prevents tubes from colliding with each other – maximum sample safety protection.WRITING AREA: Writing area on side of rack for easy marking, handles on each end for secure handling. The surface is smooth, without burrs or sharp corners, safe and odorless.FIVE COLORS：Lab tube racks have different colors can help users distinguish between different test stages. (Different production batches may have color differences. Please refer to the actual color received.)PREMIUM MATERIALS：Microcentrifuge tube rack is made of high strength plastic, chemically resistant to alcohols and mild organic solvents, racks not easy to deform and can be reused.Ordering InformationCat #WellColorSterileUnitP90-800980-wellAssorted ColorsNo5/Bag