Test 4: total alkalinity – Poolmaster 22280 5-Way Test Kit User Manual
Page 10

8
Large Vial
Chlorine Neutralizer
Solution #4
Green Cap
Total Alkalinity Test
Solution #5
Blue Cap
White Cap
Acid Demand & Alkalinity
Solution #3
1. Rinse the large vial with pool water and fill to the
lower (dashed) line marked “Alkalinity”.
2. Add 1 drop Solution #4 and swirl to mix.
3. Add 2 drops Solution #5 and swirl to mix. The test
solution will now be violet in color.
4. Add Solution #3 counting each drop and swirling
between drops, until the color makes a permanent
change to light yellow or clear.
5. Multiply the number of drops of Solution #3 used by
10 to determine the total alkalinity. Example: 8 drops
= 80 ppm.
6. Total alkalinity of 80-100 ppm is desirable.
If alkalinity is less than 80 ppm, raise it by adding
sodium bicarbonate. See Raising Total Alkilinity Chart
on page 11 for details.
If alkalinity is more than 120 ppm, pH and Acid Demand
test should be performed more than once a week.
Make the proper additions according to the test results.
Add up to, but no more than, one quart of acid daily
until the alkalinity level drops below 120 ppm. Do not
add acid if the pH level is below 7.6. A total alkalinity
range above 200 ppm indicates one or more daily
additions of acid may be needed to adjust pH and
destroy the excess alkalinity.
This test should be performed about once a week
until the alkalinity is adjusted to the desired range.
Thereafter, twice a month should be sufficient.
TEST 4: Total Alkalinity