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06/24/2018, 05:14 AM
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#1 |
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Registered Member
Join Date: Jan 2016
Location: New Jersey
Posts: 527
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New Salfert calcium test kit
I just opened my new kit since the old one was used up. The directions have changed. The old kit called for 8 drops of cal 2 the new one is 10. With the old kit my calcium was a steady 430. I test every week. With the new kit it came in at over 500. I'm wondering if the instructions are a typo. There is no way I could be stable for two months and have a jump like that in 1 week.
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06/24/2018, 05:22 AM
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#2 |
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Registered Member
Join Date: Jan 2016
Location: New Jersey
Posts: 527
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Just ran the test with 8 drops and got the same result.
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06/24/2018, 05:32 AM
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#3 |
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Registered Member
Join Date: Jun 2018
Posts: 56
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Yup...I noticed it too. I figure if it was a typo they would a least post a notice of some kind. My results never changed. I check 2x week.
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06/24/2018, 05:49 AM
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#4 | |
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Registered Member
Join Date: Jan 2016
Location: New Jersey
Posts: 527
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Quote:
Ca-2 solution is a hydroxide solution to precipitate magnesium hydroxide and prevent it from being detected. The amount of it is not important as long as there is enough to precipitate the magnesium |
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06/24/2018, 07:57 PM
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#5 |
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RC Mod
 Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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That makes sense. I hadn't thought of that.
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Jonathan Bertoni |
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