KOH string test for bacterial characterisation

Welcome to our suite of NUI Galway Microbiology teaching videos. We hope that they will guide you in performing your experiments in a scientific and safe manner.
This video describes how to perform a KOH string test. This test is a valuable adjunct to the Gram stain, and will help to determine if an organism is Gram positive or Gram negative.

[@LivyWard]

Great resource. Clear and simple demonstration! Good job on the videography and lighting; made everything easy to see. Thanks!

[@TieMaxx]

Wow you can literally see the DNA

[@sophiams3529]

why is it called japanese gram test?

[@Luis-bo2uj]

because you have to close your eyes a bit and focus too see the string