Adarsh Instrument Pvt. Ltd. Offers Leakproof Centrifuge Tube Conical Bottom. Adarsh Instrument Pvt. Ltd. Has received an ISO 9001:2000 certification. Leakproof Centrifuge Tube Conical Bottom is used as laboratory plastic ware and used in industry, pharmacy, dairy, soil testing, pathological laboratory and general laboratories. Leakproof Centrifuge Tube Conical Bottom is available in two sizes i.E.15ml and 50ml.