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complete, the instrument will automatically print the measuring results (if you choose the
automatic printing function).
VIII.Use the Matters Needing Attention
1, test the cup must be cleaned with anhydrous ethanol, stay dry rear can use.
2, pay attention to the determination of acid value before, must first blank experiment, if a
measuring cup sample can make a blank experiment. If the time interval is longer or the
environment temperature changes, the each measured sample before to do an blank test.
Please confirm and check whether it is the first cup of cup into the stir bar magnet.
3, special remind: blank test, neutralization liquid drop speed must not be too fast, or you
will make the drop testing is not accurate, affect the experiment result.
4, if a blank test, open cover, the sample inspection should also uncovered protective
cover, when the ambient light is consistent before and after the test.
5, experimental oil cup cup dish, the pallets must ensure that the bottom is completely
inside the cup, in order to avoid cup set is not straight, effect light detection.
6, every cup after the experiment must be removed from the cup dish, to avoid impact
position when doing the experiment again.
7, at the end of the experiment, and fluid and extraction fluid bottle should be placed on
shading in sealed preservation, avoid deterioration failure.
IX.Failure Phenomenon and Elimination Method
1, the neutralization liquid droplet, slow or little.
1) Possible and liquid bottle cap not tighten, air leakage. Tighten the lid.
2) Likely due to not completely clean, make the neutralization titration needle
clogging
Processing method:
Replace # 4.5 needles, adjust the tilt Angle of the needle, the droplet number detection
accuracy.
2, low acid value oil test results appear error 0.0001 mgKOH/g or phenomenon.
Solution: need to blank experiment. To ensure that the blank experiment must be
accurate.