REAGENT:-NITRITE, CHLORIDE , pH, ALKALINITY
Procdure:-
NITRITE PROCEDURE for test ( STEP WISE ):
Each DROPS is equivalent to 50 PPM of NO2
CALCULATION :-50 X Number of DROPS of TK6
CHLORIDE PROCEDURE for test ( STEP WISE ):-
RESULT :- Each DROPS is equivalent to 8 PPM of CHLORIDES .
PROCEDURE for TOTAL ALKALINITY:-
Measure 10 ml of SAMPLE WATER in graduated TEST TUBE / CYLINDER
Add 1-2 drops of RXSOL TK7 and mix with the stirring rod , If sample turns red / PINK ( which indicates presence of p-Alkalinity ) then follows 3rd step otherwise if sample remains colourless ( Record p-Alkalinity = 0 ) then proceed to STEP- 4.
Add RXSOL TK9 drop by drop ( by counting ) , mixing with the stirring rod until colour just disappears. Each drop is equivalent to 15 ppm of p-Alkalinity , expressed as CaCO3
Add 2-3 drops of RXSOL TK8 and mix with stirring rod , the sample will turn to BLUISH-GREEN .
AddRXSOL TK9 carefully by counting drop by drop and mixing throughly until a light reddish ( salmon ) pink colour develop.
RESULT:-Each DROPS is equivalent to 25 PPM of Alkalinity