check YouTube Making CDS in my kitchen! Woohooo!

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19 Dec 2012 22:15 #28371 by Lockedout
Replied by Lockedout on topic YouTube Making CDS in my kitchen! Woohooo!
I agree it just ain't clear. especially testing the strength.CDS

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19 Dec 2012 22:34 #28373 by Lockedout
Replied by Lockedout on topic YouTube Making CDS in my kitchen! Woohooo!
How does testing the end product, with a test strip rated 0 to 500, indicate a solution of 50,000 ppm?# when the reading is only showing a reading near 50+.

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19 Dec 2012 22:42 #28374 by Lockedout
Replied by Lockedout on topic YouTube Making CDS in my kitchen! Woohooo!
TG thanks for the video, really good try. Take care your drop counting needs some attention. It can make a difference.
regards.

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20 Dec 2012 01:05 - 20 Dec 2012 01:06 #28378 by pam
You test by proportion.

I usually test 1ml CDS to 59ml distilled water. The resulting reading I get, I multiply by 60.
Or if I test 1mL CDS to 19 ml distilled water, I multiply that reading by 20. So, if I get 300, then the final ppm is 6000ppm.

JH has spoken about testing 1ml CDS to 9 ml distilled water - then you would multiply the reading by 10. that works if you have CDS that is less than 5000ppm - once you get to 5000ppm (which you would get by a reading of 500 multiplied by 10) it's hard to tell how much above 5000 you can get.
Last edit: 20 Dec 2012 01:06 by pam.
The following user(s) said Thank You: Rainbow Fighter, Lockedout

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