Elos has released a new test kit for Mg and made some changes to it.
Old Kit Notes:
Kit was accurate to 100ppm
You put 3ml of tank water in, followed by 9 drops of Reagent A, .15g of color indicator and then used Reagent C, counting drops and multiplying that by 100 or 75 (depending on expire date) to get your Mg level.
If you wanted to get to 50ppm accuracy, you could double the water sample to 6ml and then follow the rest of the steps normally and then divide by 2 and multiply by 100 or 75 to get your result.
New Kit Notes:
Kit comes standard accurate to 50ppm.
The big change is this is now a 2 phase test. You use the A reagent on 3ml of tank water. You count the drops until the orange turns to green then record that number for use later.
You then utilize a second 3ml of sample water and put 7 drops of Reagent B, followed by .15g of the color indicator and then drop D similar to the previous test until it turns from purple to blue. You record the number of drops from that as well.
Now that you have your two drop totals you subtract the second number (Smaller number) from the first step (larger number) and multiply the result by 50 to get your result in ppm.
Conclusion:
The higher accuracy 50ppm vs 100ppm is an improvement for sure, and will save you some money because you will have more tests out of the new kit than the standard to get the 50ppm accuracy.
However, it now takes twice as long to get the result. Not a big deal as you can do them one right after another, but it is an extra step.
I ran both kits tonight and got the following results...
Old test 1500ppm and new test 1400ppm. I will redo them tomorrow and see if I get the same spread, but for now I will take the middle ground and call it 1450ppm.
Old Kit Notes:
Kit was accurate to 100ppm
You put 3ml of tank water in, followed by 9 drops of Reagent A, .15g of color indicator and then used Reagent C, counting drops and multiplying that by 100 or 75 (depending on expire date) to get your Mg level.
If you wanted to get to 50ppm accuracy, you could double the water sample to 6ml and then follow the rest of the steps normally and then divide by 2 and multiply by 100 or 75 to get your result.
New Kit Notes:
Kit comes standard accurate to 50ppm.
The big change is this is now a 2 phase test. You use the A reagent on 3ml of tank water. You count the drops until the orange turns to green then record that number for use later.
You then utilize a second 3ml of sample water and put 7 drops of Reagent B, followed by .15g of the color indicator and then drop D similar to the previous test until it turns from purple to blue. You record the number of drops from that as well.
Now that you have your two drop totals you subtract the second number (Smaller number) from the first step (larger number) and multiply the result by 50 to get your result in ppm.
Conclusion:
The higher accuracy 50ppm vs 100ppm is an improvement for sure, and will save you some money because you will have more tests out of the new kit than the standard to get the 50ppm accuracy.
However, it now takes twice as long to get the result. Not a big deal as you can do them one right after another, but it is an extra step.
I ran both kits tonight and got the following results...
Old test 1500ppm and new test 1400ppm. I will redo them tomorrow and see if I get the same spread, but for now I will take the middle ground and call it 1450ppm.
Or is this part of the test kit write-up about bonding ions and separating the true ca/mg etc from the tests?