Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Quick Calcium hardness test Question

  1. Back To Top    #1

    Quick Calcium hardness test Question

    I was checking my pool with my test kit and when I got to the CH test, I added the water to the bottle and when directed to put the 5 drops of the I believe the forst was titrant, the water should have changed to red. It did not change to red after the 5th drop, so I put it a sixth drop and it di turn a little red. I then continued the test and added the other drops of the second bottle and counted the drops till it turned from red to blue. By adding the 6th drop, would that effedct my reading? I dont know why it didnt change color after the 5thdrop. I used the test last year and it worked on the 5th drop. maybe the liquid drops lose potency from season to season. this was a bottle i had purchased last year. But like i said it worked last year after 5 drops but this year i needed to add a 6th drop. let me know. thanks.

  2. Back To Top    #2
    linen's Avatar
    Join Date
    Jul 2010
    Twin Cities, MN

    Re: Quick Calcium hardness test Question

    Did you add the 20 drops of the R-0010 first?

    Take a look at the extended test kit directions and see if any of the information helps your testing.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  3. Back To Top    #3

    Re: Quick Calcium hardness test Question

    i am using a test kit that only requires the 5 drops first then the second bottle for counting drops and then multiplying by 10.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts