Nalgene™ Unwire™ Polypropylene Test Tube Racks
By NalgeSame innovative design as Unwire™ test tube racks made using ResMer™ manufacturing technology, except made of polypropylene. 6 x 12 array. Will not float in water baths. Stackable when empty to save space. Securely hold a full load of test tubes. These racks are NOT autoclavable.