? on Salifert Alk/Kh test

Steve · 07-20-2001, 11:51 PM

I just received my salifert test kits. For the KH/Alkalinity it says you can do twice as many tests with the lower resolution test in which you basically add half of the ingrediants and it is a little bit harder to see when the color changes. My question is it says to 'mulitiply the calculated result by 2' for doing the lower resolution test. I tried this and it doesn't make any sense. The amounts were off the scale. Wouldn't you divide the calculated result by two instead?
Thanks.
Steve

***Reefland*** · 07-21-2001, 12:41 AM

Multiplying by 2 is correct. If you were adding twice the amount (i.e. 8ml), then you would divide by 2. For a more accurate test, try using the recommended amounts.

What was the result you got?

Scott

Steve · 07-21-2001, 11:58 AM

For the regular method (not cutting the amounts in half), I had a dKH of 6.7 and a Alkalinity of 2.4. The alkalinity is pretty much dead on with my Red Sea test kit. Yes, I know these are low. I have been adding reef builder to raise the alkalinity but it drops after a few days. With the 'low resolution' test, I have .79 left in the syringe. Multiply the results by 2 and that is a dKH of 25.28 and a alkalinity of 9.02. What am I doing wrong for the low res test?

DukeDog · 07-22-2001, 10:07 AM

If Im reading the test instructions correct I think you need to look at the values on the list . Find the value you got (.79) then decide if you want DKH or meq/l results. In dkh its 3.3 or very close then multiply by 2. In meq/l its 1.20 or very close then multiply by 2. HTH
Jeff

07-20-2001, 11:51 PM	#1
Steve Council Join Date: Nov 2000 Location: DeForest, WI, USA Posts: 259	? on Salifert Alk/Kh test I just received my salifert test kits. For the KH/Alkalinity it says you can do twice as many tests with the lower resolution test in which you basically add half of the ingrediants and it is a little bit harder to see when the color changes. My question is it says to 'mulitiply the calculated result by 2' for doing the lower resolution test. I tried this and it doesn't make any sense. The amounts were off the scale. Wouldn't you divide the calculated result by two instead? Thanks. Steve

07-21-2001, 12:41 AM	#2
*Reefland* Owner Join Date: Feb 2000 Location: Bardstown, KY Posts: 13,031	Hi Steve! Multiplying by 2 is correct. If you were adding twice the amount (i.e. 8ml), then you would divide by 2. For a more accurate test, try using the recommended amounts. What was the result you got? Scott

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07-21-2001, 11:58 AM	#3
Steve Council Join Date: Nov 2000 Location: DeForest, WI, USA Posts: 259	For the regular method (not cutting the amounts in half), I had a dKH of 6.7 and a Alkalinity of 2.4. The alkalinity is pretty much dead on with my Red Sea test kit. Yes, I know these are low. I have been adding reef builder to raise the alkalinity but it drops after a few days. With the 'low resolution' test, I have .79 left in the syringe. Multiply the results by 2 and that is a dKH of 25.28 and a alkalinity of 9.02. What am I doing wrong for the low res test?

07-22-2001, 10:07 AM	#4
DukeDog Citizen Join Date: Feb 2001 Location: SWFL Posts: 165	If Im reading the test instructions correct I think you need to look at the values on the list . Find the value you got (.79) then decide if you want DKH or meq/l results. In dkh its 3.3 or very close then multiply by 2. In meq/l its 1.20 or very close then multiply by 2. HTH Jeff

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