Plastic Test Tube Stand Bracket Rack for 13-18MM Test Tubes 40/50 Hole Positions

20.5x10x5.8cm(18mm x 40 holes). Three tier test tube rack with 40/50 holes, can hold 40/50 tubes, Suitable for 13/16/18mm wide test tube. 1 x Test Tube Rack. Ideal for use in many applications from laboratory testing to food and beverage service.

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