Disposable test tubes, plastic test tubes, made of PE or PS. different size. Test Tubes: Round bottom, PS material: 13x75mm, 12X75mm, 12x60mm, 16x100mm, 15x100mm, 13x100ml, ... : 13x75mm, 12X75mmConical bottom, PS material: 16x102mmConical bottom, PP material: 16x102mmTubes with gratuation: 15ml PP material, 15ml PS material NumberNameSpecificationQuantity(ctn)ctn ...