LaMotte HARDNESS TEST KIT 4824-LT-01 - Manual (Page 2)

TEST PRO CE DURES
TOTAL HARDNESS
1.
Fill the test tube (4488) to the desired line with sample water.
To receive results in ppm, fill tube to upper line.
To receive results in gpg, fill tube to middle line.
If the hardness level is above 200 ppm, fill tube to lower line.
NOTE: 1 gpg = 17.1 ppm
2. Add five drops of *Hardness Reagent #5 (4483). Swirl to mix.
3. Add one Hardness Reagent #6 Tablet (4484). Swirl to dissolve tablet.
Solution will turn red if hardness is present. If solution is blue, there is
no measurable amount of hardness.
4. While gently swirling tube, add Hardness Reagent #7 (4487WT), one
drop at a time until color changes from red to clear blue. Count the
number of drops added. Hold dropper bottle vertically.
5. To determine total hardness test result, multiply the number of drops
added in Step 4 by:
lower line 20 ppm CaCO
3
middle line 1 gpg CaCO
3
upper line 10 ppm CaCO
3
CALCIUM HARDNESS TEST
1.
Fill test tube (4488) to the desired line (see Step 1, above) with
sample water.
2. Add 6 drops of *Sodium Hydroxide Reagent w/Metal Inhibitors
(4259). Swirl to mix.
3. Add one Calcium Hardness Indicator Tablet (T-5250). Swirl to
dissolve tablet. Solution will turn red if hardness is present. If solution
is blue, there is no measurable amount of hardness.
4. While gently swirling tube, add Hardness Reagent #7 (4487WT), one
drop at a time until color changes from red to clear blue. Count the
number of drops added. Hold dropper bottle vertically.
5. To determine calcium hardness test result, multiply the number of
drops added in Step 3 by:
lower line 20 ppm CaCO
3
middle line 1 gpg CaCO
3
upper line 10 ppm CaCO
3