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Posted by Dan on April 07, 2004 at 19:51:40:
In Reply to: Re: Sulphite Residual Test Procedure posted by Dan on April 07, 2004 at 19:50:25:
: : : I just have a quick question on testing for sulphite residuals in boiler water. I have two testing procedures and the chemicals to do the test are identical. However one test says to take the Number of drops of Potassium-Iodide-Iodate and multiply it by 2 to acheeve the end point and the other is multiplied by 10. Now I have never seen the X by 2 before until I started my new job. I can't find any reference to it at all. Just wondering if anyone out there can give me a little more information on this. Thanks Craig Butler
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: : What you need to do is find out the name of the manufacturer of the IO/IO and call them to find out the correct multiplier. If Taylor makes it and it is N126, the multiplier should be 10.
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: Same for Nalco and Ge betz products. ML x 10 = PPM for 50ml sample