VWR® Wash Bottles. Supplier: VWR International. Description: LDPE wash bottle features a polypropylene screw cap and stem that are molded into a one-piece unit for leakproof operation. Certificates. ,414004-227CS,414004-227PL,414004-227PK,414004-225CS,414004-225PK,414004-225PL,414004-226PL,414004-226CS,414004-226PK.