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Old 03-07-2011, 06:54 AM   #221 (permalink)
Seattle_Aquarist
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Default Re: glutaraldehyde instead of excel

Hi megasycophant,

Yes, apparently there are chemical indicators, in the form of test strips, that can be used to check the viability of Metricide. The strips check for the Minimum Effective Concentration (which is 1.5%) in the application I described above.
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