It has come to the moderators attention that the following section of the "Water Testing Instructions of One Page" instructing how to do a dilution test when cya is above 90 ppm, is incorrect.
Here are the original incorrect instructions (cut on 6/6/12):
The correct method for a cya dilution when cya is above 90 ppm is from the extended test kit directions. I have modified it slightly to fit the format on this thread's first post:
Since PaulR has not been on the forum for awhile, I have taken the liberty of editing his post.
Note: the attached pdf does not reflect this correction yet.
Here are the original incorrect instructions (cut on 6/6/12):
PaulR said:For CYA >90ppm:
Mix sample as above then cut 50/50 with filtered tap water; do the black-dot test, and double the reading.
OR, mix a smaller sample to begin with:
a) Measure 4ml R-0013 into the mixing bottle.
b) Measure 4ml pool water into the mixing bottle.
c) Measure 8ml tap water into the mixing bottle.
d) Continue from step 3 above.
The correct method for a cya dilution when cya is above 90 ppm is from the extended test kit directions. I have modified it slightly to fit the format on this thread's first post:
For CYA > 90ppm, repeat the test adjusting the procedure as follows:
a) Fill the mixing bottle to the lower mark with pool water.
b) Continue filling the mixing bottle to the upper mark with tap water.
c) Shake briefly to mix.
d) Pour off half of the contents of the mixing bottle, so it is again filled to the lower mark.
e) Continue the test normally from step 3, but multiply the final result by two.
Since PaulR has not been on the forum for awhile, I have taken the liberty of editing his post.
Note: the attached pdf does not reflect this correction yet.