VWR® Glass Fiber Filters. Supplier: VWR International. Description: Binder-free VWR® glass fiber filters feature fast flow rates, high-loading capacity, wide thermal tolerance, and excellent precipitate retention. Certificates. ,28333-139PK,28297-974PK,28333-135PK,28297-289PK,28333-129PK,28333-137PK,28333-127PK.