Membrane filters are specially tested for microbiology. 0.45 µm white gridded membranes are tested for coliform, faecal streptococci and serratia marcescens. All 0.65 µm white gridded membranes are tested for complete retention and optimal recovery of faecal coliform and saccharomyces cerevisieae.
Contrasting grid lines allow counting colonies on the filter surface and are tested to assure freedom from grid line inhibition. 3.1 mm squares represent 1/100 of the filtration area of a 47 mm diameter filter (9.6 cm2).
Black and green membranes are also tested for uniform wetting, freedom from grid line inhibition and optimal colour reactions on appropriate test media.
HEMCO MicroFlow family of ductless workstations
HEMCO's MicroFlow family of Class 1 ductless carbon filtered workstations is equipped with...
Cytek SpectroFlo QC Beads for flow cytometer performance tracking
Cytek's SpectroFlo QC Beads contains 3 µm particles with one fluorescent intensity. The...
Waters Rheo-Impedance Spectroscopy (Rheo-IS) accessory
Waters has released an accessory for its TA Instruments Discovery Hybrid Rheometers (HR) that...
