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#14
11 years ago
One thing I've learned by working in a lab is you get frustrated very quickly if things don't work out. I can see you're flustered with this, so try not to!

I'd recommend trying it again at various concentrations, starting from weakest to strongest to see which one your sample responds to best.
micro Author
wrote...
#15
11 years ago
That's so true! I've tried it twice with different bacteria but no luck. I hope its not something wrong with the chemical...
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#16
Staff Member
Educator
11 years ago
Quote from: micro (11 years ago)
That's so true! I've tried it twice with different bacteria but no luck. I hope its not something wrong with the chemical...

Well, to test that theory, aluminum sulfate reacts with base to form a white precipitate

Al2(SO4)3(aq) + 6NaOH(aq)→3Na2SO4(aq) + 2Al(OH)3(s)

If you have hydroxide in the lab, test to see if this happens.
Mastering in Nutritional Biology
Tralalalala Slight Smile
micro Author
wrote...
#17
11 years ago
Its ammonium sulfate not aluminium Wink Face
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