Hi everyone! My Lamotte Ca test kit gives me readings of 750, 800, 1000, etc. on both main tank and make up water. This can't be correct, right? Am I doing something wrong or do I have to do more math? Here are my steps:
Fill vial with 1.0 ml saltwater
Dilute to 12.9 ml with distilled water
Add 6 drops hydroxide soln and swirl
Add 1 tablet and swirl
Start titrating until soln turns from red to purple to blue (I disregard when soln turns from blue back to purple within 5 sec. I record value when soln stays blue for 7 sec)
Multiply titration value by 5.16
My readings on the titrator syringe are usually >180 so if multiplied by 5.16 gives me results of >928 ppm Ca
Anyone see any mistakes I make during the steps? Do I need to do any more math on the 928 value? Thanks in advance.
Fill vial with 1.0 ml saltwater
Dilute to 12.9 ml with distilled water
Add 6 drops hydroxide soln and swirl
Add 1 tablet and swirl
Start titrating until soln turns from red to purple to blue (I disregard when soln turns from blue back to purple within 5 sec. I record value when soln stays blue for 7 sec)
Multiply titration value by 5.16
My readings on the titrator syringe are usually >180 so if multiplied by 5.16 gives me results of >928 ppm Ca
Anyone see any mistakes I make during the steps? Do I need to do any more math on the 928 value? Thanks in advance.