β-Lactamase Blend recombinant, expressed in E. coli Sigma L7920
Components
600-1500 IU beta-lactamase I per vial
60-100 IU beta-lactamase II per vial
Unit Definition
One unit will hydrolyze 1.0 μmole substrate per min (βI: benzylpenicillin; βII: cephalosporin C) in phosphate buffer, pH 7.0 at 25°C.
Physical form
Lyophilized powder containing sodium chloride, potassium phosphate and sorbitol.
Характеристики реактива | |
storage temp. | 2-8°C |