salifert KH/Alk test instructions
- Thread starter ahpchagi
- Start date
salty2275
Member
1) Add with the 5 ml syringe 4 ml of water in the test vial. For a lower resolution and more tests per kit add 2 instead of 4 ml.
2) Shake the KH-Ind dropping bottle a few times and add 2 drops in the test vial (1 drop for the low resolution mode).
3) Put the plastic tip firmly on the 1 ml syringe and draw in the syringe the KH reagent (ensure that the end of the plastic tip is constantly submersed in the KH reagent) till the lower end of the black part of the piston is exactly at the 1.00 ml mark. There will be some air present just below the piston. This is the air which was present between the end of the plastic top and the piston. This will not influence the test result.
4) Add dropwise the the 1 ml syringe the KH reagent to the water in the test tube. Swirl after each drop a second or two. Continue with this until the color changes from blue/green to a orange-red or pink color (whichever color is observed first).
5) Hold the syringe with the tip facing upward and read the position of the now upper end of the black part of the piston. The syringe has graduations of 0.01 ml. Read the KH or alkalinity value from the table or calculate as follows:
KH in dKH = (1 - reading in step 5) x 16
Alk in meg/L = (1 - reading in step 5) x 5.71
If you have chosen for the lower resolution multiply the calculated result by 2.
Natural seas water has a KH of 8 dKH or alkalinity of 2.9 meg/L.
2) Shake the KH-Ind dropping bottle a few times and add 2 drops in the test vial (1 drop for the low resolution mode).
3) Put the plastic tip firmly on the 1 ml syringe and draw in the syringe the KH reagent (ensure that the end of the plastic tip is constantly submersed in the KH reagent) till the lower end of the black part of the piston is exactly at the 1.00 ml mark. There will be some air present just below the piston. This is the air which was present between the end of the plastic top and the piston. This will not influence the test result.
4) Add dropwise the the 1 ml syringe the KH reagent to the water in the test tube. Swirl after each drop a second or two. Continue with this until the color changes from blue/green to a orange-red or pink color (whichever color is observed first).
5) Hold the syringe with the tip facing upward and read the position of the now upper end of the black part of the piston. The syringe has graduations of 0.01 ml. Read the KH or alkalinity value from the table or calculate as follows:
KH in dKH = (1 - reading in step 5) x 16
Alk in meg/L = (1 - reading in step 5) x 5.71
If you have chosen for the lower resolution multiply the calculated result by 2.
Natural seas water has a KH of 8 dKH or alkalinity of 2.9 meg/L.