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Shotglass method to make CDS 11 Jun 2012 03:39 #18533

  • sungazer
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I wanted to share my experience making CDS using
a jar and shot glass (instead of an open syringe) as a modification of the
latest CDS making method. I put 20 drops each of chlorite and citric acid
solutions in a shot glass and set that inside a 2 quart glass jar that had
4 ounces of water. I put the plastic lid on the jar and walked away leaving
it to react overnight. In the morning the 4 ounces of water had a yellow
tint. I removed the shot glass and there was a fog inside the jar so I quickly
resealed it and left it in the fridge. That afternoon I opened the jar, fog
was gone and water was a darker yellow-green. I put 9 mililiters of water
and 1 ml. of the yellow-green solution from the jar in a cup and dipped a
chlorine dioxide test strip into it and got a reading of 5000ppm. After adding
about 2 ounces water to dilute the CDS I got the desired 3000ppm. Next batch
I will use 10 drops each of chlorite& citric-should yield a 3000ppm CDS
without diluting and be even more economical.
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Re: Shotglass method to make CDS 11 Jun 2012 05:04 #18536

  • paul
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Well done, sungazer
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Re: Shotglass method to make CDS 11 Jun 2012 12:51 #18553

  • woofy
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I wonder what Charlotte, CLO2, thinks about this method . She is quite cluey and It would be interesting to hear if she has an opinion with making CDS this way.
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Last edit: by woofy.

Re: Shotglass method to make CDS 11 Jun 2012 17:03 #18572

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When doing the shot glass method does the jar have to be exactly 2 quarts ?

I have LaMotte High Range Chlorine Dioxide Test Strips
the range is:

0 10 25 50 100 250 500

how do I measure 3000ppm ?
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Re: Shotglass method to make CDS 12 Jun 2012 03:43 #18597

  • TRUEBLUE
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HELLO, The answer to your question is to use the "100" multiplier. simply draw out 29 ML. of distilled water and 1 ML. CDS solution.... When your reading is "100" you times that by 30, and badda bing, you have 3000 ppm. WHY? you may ask... Because you diluted your CDS 1/30,, and 30 times 100 is 3000, 3000 PPM. I checked this with the pros at LAMOTT, I think his name is charlie, he set me strait.
believe me, it's not a silly question, I had to ask too! ;)
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Re: Shotglass method to make CDS 12 Jun 2012 04:12 #18600

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Exactly 2 quarts not necessary, but you want room for the gas so pressure doesn't build up.
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Re: Shotglass method to make CDS 12 Jun 2012 08:12 #18631

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I did 10:10 drops and 4 oz water and only got a 500ppm reading as in the 50 on the LaMotte reading
0 10 25 50 100 250 500

I will try the 20:20 as you did and see what happens, can always dilute it
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Re: Shotglass method to make CDS 14 Jun 2012 04:26 #18729

  • sungazer
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You are right..I did the testing wrong..what I thought was 3000ppm is only 300ppm. Maybe I should use 10X as much chlorite & citric solution, but that makes me worry about blowing the lid off my glass jar. But then how much activated MMS was used in the original syringe method?
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Re: Shotglass method to make CDS 14 Jun 2012 04:54 #18732

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The original rbs method used 10 drops activated MMS. Looking back, when I used 20 drops the resulting CDS solution initially tested between 250 and 500 before I diluted it. My confusion was in thinking I wanted to match the color for the 25 range.
I want a 300ppm solution so next I will use a gallon jar and more drops of activated MMS.
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Last edit: by sungazer. Reason: trying to be more accurate