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RXMARINE CHEMICAL TAG::
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PROCEDURE for m-ALKALINITY test ( STEP WISE ) |
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| C.) PROCEDURE for TOTAL ALKALINITY ( VALUE of A + VALUE of B ) | |
| 2.1 |
Measure 10 ml of SAMPLE WATER in graduated TEST TUBE / CYLINDER |
| 2.2 |
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. |
| 2.3 |
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 . |
| 2.5 |
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 |
| NOTE |
p-Alkalinity ppm CaCO3VALUE = 25 X ( Total Number of DROPS of TK9 , during 2.3 step ) = X ( Say ) |