Pl. refer this link for more details : www.rxmarine.com/Alkalinity-test-kit
PROCEDURE for m-ALKALINITY test ( STEP WISE )
|C.) PROCEDURE for TOTAL ALKALINITY ( VALUE of A + VALUE of B )|
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
|2.4||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|
p-Alkalinity ppm CaCO3VALUE = 25 X ( Total Number of DROPS of TK9 , during 2.3 step ) = X ( Say )