Vi. correction:<br>Calibration is an important measure to ensure the test accuracy of the instrument. The instrument must be calibrated once every half a year according to the following three calibration indexes and pharmacopoeia.<br>1. Accuracy of sampling volume<br>(1) equipment<br>Balance (accuracy 0.01g); distilled water; 150ml beaker<br>(2) operation<br>1. Power on the instrument.<br>2. Pour distilled water into the beaker (about 2 / 3) and place it on the inspection table. At this time, place the mixer outside the sampling cup.<br>3. Click the full channel key and set 5ml for sampling. If 5ml ± 2% of the measured volume is qualified, the computer shall be used for calibration if necessary<br>2. Accuracy of particle count (calibration)<br>Example: ≥ 10 μ M channel correction<br>1. Standard particle: the peak particle size should be within 10 μ m ± 0.5 μ m;<br>2. The two main peaks should account for more than 90% of the total number of particles;<br>3. Dilution concentration: 1000-1500 capsules / ml (0.9% sodium chloride injection or clean water).<br>4. Calibration method: when the instrument is powered on to complete self inspection, and the purified water environment test has been conducted by the instrument, turn the diluent of 10 μ m standard particles back and forth forcefully for 20 times, so that the particles are evenly distributed, take<br>
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