Cap has a firmly bonded rubber liner providing a sure and highly inert sealing surface.

These 47-mm diameter, 0.45-µm pore size GN-Metricel membrane filters meet or surpass all U.S. Environmental Protection Agency (USEPA) and American Society for Testing and Materials (ASTM) specificatio

White mixed-cellulose ester media provides maximum retention, recovery and enumeration of microorganisms. Filters are ideal for membrane filtration of total and fecal coliforms, E. coli, Streptococcus

Made of rugged, autoclavable polyphenylsulfone. Magnetic, no-leak seal allows one-hand operation for filter retrieval. Support screen included. Graduated funnel: 300 mL (50 mL increments). Stem fits #

Single junction electrode is well suited for general-purpose, less demanding applications. Ideal for dirty and damp field conditions. Display orientation means no need to turn your head or tilt the te