kdheart Cuvette Rack Test Tube Bracket Test Tube Rack 40/50 Holes 3 Floors Stand Lab Lab Tool Lab Oratory Supplie Science Chemical Reaction Holder

Lightweight and easy to carry. Polystyrene material, durable Detachable, convenient to store.Easy to install. It is convenient to insert and remove the test tube. Suitable for 13/16/18mm wide test tube. Ideal for use in many applications from...