Polypropylene (PP) test tubes, not graduated, conical bottom with self-standing base and polypropylene (PP) tight screw cap yellow colour which guarantees a perfect leakproof. The screw cap is “capture” type, it allows to accomodate a possible collection swab inside the tube. Non-cytotoxic, biologically inert. Ø16 x 100 mm. Autoclavable at +121 °C.