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KOH string test - Microbiology - BioForum

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KOH string test


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3 replies to this topic

#1 maryjo

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Posted 24 March 2010 - 01:06 PM

I just read about the KOH string test...it's strange i have not ever heard of it throughout my long years at school!!!
Anyway, i have KOH pellets and dont know exactly how to make the KOH solution and if i can store the made solution in a plastic container. Anyone know?

#2 fishdoc

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Posted 24 March 2010 - 01:34 PM

I just read about the KOH string test...it's strange i have not ever heard of it throughout my long years at school!!!
Anyway, i have KOH pellets and dont know exactly how to make the KOH solution and if i can store the made solution in a plastic container. Anyone know?




Make a 3% solution. We store it in a glass dropper bottle.

http://www.microbiol...ers/WP.Gram.htm

#3 maryjo

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Posted 24 March 2010 - 01:54 PM

Ok thanks :wacko:

This is a stupid question, i know, but 3% KOH is 3 grams KOH in 100 mL water?

#4 fishdoc

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Posted 24 March 2010 - 03:38 PM

Ok thanks :wacko:

This is a stupid question, i know, but 3% KOH is 3 grams KOH in 100 mL water?




Correct.




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