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- Use the “solvent absorption” function of the moisture analyzer to inject about 50ml of anhydrous methanol and chloroform mixed solution into the titration cell. Set the titration cell temperature to 40°C and wait for the temperature to stabilize.
- Use the “blank” function of the moisture analyzer to titrate to the end point to remove the moisture in the titration tank, and the instrument is ready and maintains the state of the end point.
- Draw 10 μ L of pure water with a dried micro-sampling needle, dry the needle, put it into the balance for weighing, select the instrument calibration function, inject pure water below the liquid level in the titration tank, dry the needle and put it into the balance Weighing, input the difference between the two weighings before and after as the weight of pure water into the instrument, and start the calibration.
- Repeat step 3, repeat the measurement 3~5 times, the instrument will automatically save the calibration results and calculate the average value as the titer of the reagent.
- Heat the butter sample to 40°C to increase the fluidity of the sample, use a 5ml sampling needle to extract about 3ml of the butter sample and inject it into the titration cell, and use the difference between the weight of the sampling needle before and after sampling as the sample injection volume to input a small amount of water meter, and start measuring.