Syringe Filters, Non Sterile, Environmental Express®. Supplier: Environmental Express. Description: Economical, single use, and efficient filtering stream for high output filtration from viscous and particle-laden solutions. ,76437-164PK,76437-160PK,76437-154PK,76437-132PK,76437-130PK,76437-142PK,76437-140PK. This product is no longer available.