Confidently carry out testing of media, reagents, and identification and antimicrobial susceptibility kits and evaluate the bacteriological procedures with Culti-Loops™ ready-to-use QC organisms. Proteus mirabilis 511-116 strain produces extended-spectrum β-lactamase (ESBL). This strain is recommended to be used as a positive control strain with Spectra™ ESBL Medium following the HAI surveillance programs.

The loop may be dissolved in liquid medium or streaked directly onto an appropriate media.