5. Procedure Dry with paper towel subsequent rinse the electrode with distilled water Rinse the ele

4. Preparation of Testing Calibration pH meter with buffer solution appropriate work instructions every time the tool will make the measurements for the test sample has a high temperature, conditioning your test sample to room temperature
5. Procedure Dry with paper towel subsequent rinse the electrode with distilled water Rinse the electrode with the test sample Dip the electrode into the test sample to a pH meter indicates readings remain Record the reading scale or number on the display of the pH meter
Salinity is measured with electrodes konduktimeter by using a solution of potassium chloride, KCl as a standard solution at a temperature of 25 0 C. Ingredients Distilled with DHL <1 μmhos / cm standard solution of potassium chloride, KCl 0.01 M
Dissolve 0.7456 g of potassium chloride, KCl anhydrous dried at 110 0 C for 2 h with distilled water and dilute to 1000 ml volume. joanns This solution at a temperature of 25 0 C has 1413 μmhos DHL / cm. Standard solution joanns of potassium chloride, KCl 0.1 M
Dissolve 7.4560 g of potassium chloride, KCl anhydrous dried at 110 0 C for 2 hours with an dilute distilled water to a volume of 1000 ml. This solution at a temperature of 25 0 C has 12900 μmhos DHL / cm. Standard solution alium chloride, KCl 0.5 M
Dissolve 37.2800 g of potassium chloride, KCl anhydrous dried at 110 0 C for 2 h with distilled water and dilute to 1000 ml volume. This solution at a temperature of 25 0 C has 58 460 μmhos DHL / cm.
3. Calibrate the electrode Wash with a solution of 0.01 M KCl for 3 times Adjust the temperature of 0.01 M KCl solution at 25 0 C Dip the electrode into a solution of 0.01 M KCl calibration joanns Press Set to 1413 figures show μmhos / cm (according to the instructions of work tools)
Note: if DHL test sample is greater than 1413 μmhos / cm, perform the steps in the calibration tool by using the standard solution of 0.1 M KCl (DHL = 12900 μmhos / cm) or 0.5 M KCl (EC = 58 460 μmhos / cm)
a. Determination of the sample surface water thermometer dipped directly into the test sample allow 2 minutes to 5 minutes until the thermometer indicates a stable value; Record the reading of the thermometer scale without first lifting the thermometer from the water.
b. Determination of the sample water at a certain depth Attach the thermometer in the sample-making tool; Enter the sampling tool to test the water at a certain depth to take the test sample; Pull-making tool to the surface of the specimen; Note the thermometer scale shown before the water sample removed from the sampling tool.
Email (required) (Address never made public)
% D bloggers like this: