SIM deeps are a multi-test medium comprising 3 tests: sulfide (H2S gas), indole production, and motility. You have already tested for motility via the hanging drop slide, and here is an additional way...SIM deeps are a multi-test medium comprising 3 tests: sulfide (H2S gas), indole production, and motility. You have already tested for motility via the hanging drop slide, and here is an additional way to determine it, with less muss and fuss. In fact, there is an even better way to determine motility, motility agar with tetrazolium dye, that you will also be using in lab.
