okeydokey
05/03/2015, 09:00 PM
KH Formulation
A reagent
0.04g Bromocresol Green
0.008g Methyl Red
90g DI-Water
1.6g 0.1M NaOH
B reagent
10.12g 1N HCl standard solution
428.7g DI-Water
Procedure
1. Add 4ml of sea water in the vial.
2. Shake th A reagent a few times and add 4 drops in the vial (one drop about 0.032ml)
3. Using 1 ml syringe and add dropwise with 1 ml syringe the B reagent to the water. Continue until the color changes from blue/green to grange/pink color.
4. Read the KH table
Reference
Ind. Eng. Chem. Anal. Ed., 1941, 13 (7), pp 466–470
KH/Alkalinity Table
Reading in ml, KH value in dKH
0.00, 15.7
0.02, 15.3
0.04, 15.0
0.06, 14.7
0.08, 14.4
0.10, 14.1
0.12, 13.7
0.14, 13.4
0.16, 13.1
0.18, 12.8
0.20, 12.5
0.22, 12.1
0.24, 11.8
0.26, 11.5
0.28, 11.2
0.30, 10.9
0.32, 10.5
0.34, 10.2
0.36, 9.9
0.38, 9.6
0.40, 9.3
0.42, 8.9
0.44, 8.6
0.46, 8.3
0.48, 8.0
0.50, 7.7
0.52, 7.3
0.54, 7.0
0.56, 6.7
0.58, 6.4
0.60, 6.1
0.62, 5.7
0.64, 5.4
0.66, 5.1
0.68, 4.8
0.70, 4.5
0.72, 4.2
0.74, 3.8
0.76, 3.5
0.78, 3.2
0.80, 2.9
0.82, 2.6
0.84, 2.2
0.86, 1.9
0.88, 1.6
0.90, 1.3
0.92, 1.0
0.94, 0.6
0.96, 0.3
0.98, 0
A reagent
0.04g Bromocresol Green
0.008g Methyl Red
90g DI-Water
1.6g 0.1M NaOH
B reagent
10.12g 1N HCl standard solution
428.7g DI-Water
Procedure
1. Add 4ml of sea water in the vial.
2. Shake th A reagent a few times and add 4 drops in the vial (one drop about 0.032ml)
3. Using 1 ml syringe and add dropwise with 1 ml syringe the B reagent to the water. Continue until the color changes from blue/green to grange/pink color.
4. Read the KH table
Reference
Ind. Eng. Chem. Anal. Ed., 1941, 13 (7), pp 466–470
KH/Alkalinity Table
Reading in ml, KH value in dKH
0.00, 15.7
0.02, 15.3
0.04, 15.0
0.06, 14.7
0.08, 14.4
0.10, 14.1
0.12, 13.7
0.14, 13.4
0.16, 13.1
0.18, 12.8
0.20, 12.5
0.22, 12.1
0.24, 11.8
0.26, 11.5
0.28, 11.2
0.30, 10.9
0.32, 10.5
0.34, 10.2
0.36, 9.9
0.38, 9.6
0.40, 9.3
0.42, 8.9
0.44, 8.6
0.46, 8.3
0.48, 8.0
0.50, 7.7
0.52, 7.3
0.54, 7.0
0.56, 6.7
0.58, 6.4
0.60, 6.1
0.62, 5.7
0.64, 5.4
0.66, 5.1
0.68, 4.8
0.70, 4.5
0.72, 4.2
0.74, 3.8
0.76, 3.5
0.78, 3.2
0.80, 2.9
0.82, 2.6
0.84, 2.2
0.86, 1.9
0.88, 1.6
0.90, 1.3
0.92, 1.0
0.94, 0.6
0.96, 0.3
0.98, 0