PHOSPHATE TEST:
Phosphates (Sensitivity 0, 5 – 30 mg/l(ppm) PO4-3 ) Method :
1) Rinse the test tube with the water to be tested and fill to the 5 ml mark.
2) Add 2 drops PO4 – A indicator and shake the test tube 10 seconds very well, then add 2 drops PO4 – B indicator and shake 30 seconds very well.
3) Compare the blue color to color reference color chart to determine concentration of orthophosphate in mg/l (ppm)
4) Color comparison must be completed within 5 minutes.
CHLORIDE TEST:
Chloride (Sensitivity 1 drop = 30 mg/l (ppm)) Method :
1) Rinse the test tube with the water to be tested and fill it using 5 ml injector.
2) Add 3 drops Chloride Indicator Solution and see color changes to yellow
3) Add drop by drop Silver Nitrate Solution until color changes to reddish brown.
4) Total drops of titration solution x 30 = Concentration of chloride (Cl–) in mg/l(ppm)
ALKALINITY TEST:
- Rinse the test tube with the water to be tested and fill to the 5 ml mark using injector.
- Add 3 drops P (FF) Indicator and shake. The solution must turn pink, otherwise determine M value on step 4 th.
- Add alkalinity Titration Solution drop by drop till the pink color turns to colorless. Titration is completed when it turns to colorless. Reported P alkalinity is total drops of titration solutions.
1 drop TITRATION SOL = 50 ppm Phenol (p) Alkalinity.
- Add 3 drops MR indicator to the same test tube. The solution must turn green.
- Add TITRATION SOLUTION drop by drop till it turns green to grey-red, count the titration solutions drops while the test solutions color changes green to grey-red. Reported M Alkalinity is total drops of these steps.
1 drop TITRATION SOL = 50 ppm Total (M) Alkalinity
Total Alkalinity= P alkalinity+M alkalinity
