Charm has the only B.st Disc Assay officially approved for bulk tank milk.

The Kidney Inhibition Swab is a simple to use inhibition test for screening broadspectrum antimicrobial drugs in fresh or thawed kidney tissue.

The Charm Blue Yellow Test is a microbial inhibition assay, which detects inhibitors in milk. The test consists of a single service well that contains pre-measured bacterial spores,* media
and a pH indicator.  

The Charm Cowside™ Test is a microbial inhibition assay that detects inhbitors in milk. The Cowside consists of a single service vial that contains pre-measured bacterial spores,* media and a pH indicator.