Whatman® Spartan® HPLC certified syringe filters Spartan 13 mm syringe filter, regenerated cellulose, 0.45 μm, with Mini-Tip outlet, 100/pk; Synonyms: disposable syringe filters,Z612677; find -WHA10463030 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich