How to prepare a water sample for photometry?
Posted: Tue Aug 01, 2017 3:02 am
The purpose of measuring N P K Ca Mg S is to determine the amount of material consumed by different types of plants in different periods.
The initial solution, which is prepared as a nutritious solution, includes highly accurate and measured doses of substances such as
Potassium Nitrate, Magnesium Sulphate, Calcium Nitrate, Potassium Monophosphate, Ammonium Nitrate, and other materials that supply the micro-nutrients required by the plants.
The resulting solution is very clear and after two to three days of water treatment, the water dissolved in the water (drainage water) can easily be measured by photometer.
The problem occurs when the initial solution of humic acid and fulvic acid is added. In this case, the water released is very dark and it is not possible to use this water in photometry.
I have searched a lot, but the easiest way is to use photometer and chemical reagents to measure the concentration of the material.
Due to the fact that the error of 10-15% is acceptable in test conditions, it is thought to isolate humic and fulvic acids to clear water without changing the concentration of other materials.
The initial solution, which is prepared as a nutritious solution, includes highly accurate and measured doses of substances such as
Potassium Nitrate, Magnesium Sulphate, Calcium Nitrate, Potassium Monophosphate, Ammonium Nitrate, and other materials that supply the micro-nutrients required by the plants.
The resulting solution is very clear and after two to three days of water treatment, the water dissolved in the water (drainage water) can easily be measured by photometer.
The problem occurs when the initial solution of humic acid and fulvic acid is added. In this case, the water released is very dark and it is not possible to use this water in photometry.
I have searched a lot, but the easiest way is to use photometer and chemical reagents to measure the concentration of the material.
Due to the fact that the error of 10-15% is acceptable in test conditions, it is thought to isolate humic and fulvic acids to clear water without changing the concentration of other materials.