Escherichia coli NCTC 9001 Lenticule^® discs

Escherichia coli NCTC 9001 Lenticule^® discs, 500-50000 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Escherichia coli NCTC 9001 Lenticule^® discs, 30-120 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Escherichia coli NCTC 9001 Lenticule^® discs, >100000 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland