分别取供试品约1.3g（仪器推荐进样重量）、2g、3g，精密称定，置仪

Were taken about 1.3 g of the test (Instrument Recommended sample weight), 2g, 3g, accurately weighed, placed in the instrument support cylinder, so that the test cylinder bottom through the submerged arc portion, the cylinder is placed in a dry test module (DPS) in. <br>The method of loading the software corresponding to the detection, operation of the instruments "offset", "arrangement", the "background" program, start the analysis, test results derived collected D10, D50, D90 data. <br>3 parts by weight of each parallel test. <br>In the sample weight was 1.3g, 2g, 3g measured under conditions were the results of RSD 1.4%, 1.2%, 2.2%, and the results are in line with the requirements, the test sample weight had no effect on the detection results, thus selected recommended by weight of 1.3g as the measurement instrument conditions. <br>9.1.2 degree of vacuum <br>of the test sample of about 1.3g, accurately weighed, placed in the instrument support cylinder, so too did the test cylinder bottom arc portion, the cylinder is placed in a dry test module (DPS) in. <br>Respectively 15 "H2O, 20" H2O, 30 " carried out in H2O (instrument maximum vacuum) measurement conditions, collecting D10, D50, D90 vacuum degree of data <br>each parallel testing the degree of vacuum of 3 parts <br>: Method Parameter <br>Measurement drift: <br>bACKGROUND measurement: <br>refractive index: <br>15 "H2O, 20 is" H2O, measured 30 "H2O under conditions result which D10, D50, D90, respectively, the RSD of 2.0%, 3.1%, 3.0%, indicating the degree of vacuum of the vacuum degree of the detection results no significant effect on the degree of vacuum in 15 "H2O ~ 30" H2O are applicable to detect the particle size distribution of microcrystalline cellulose. <br>The degree of vacuum 30 "H2O and the instrument default maximum vacuum degree of vacuum, in order to obtain an optimal dispersion effect of the sample, and preventing the degree of vacuum falls to 15" H2O or less, the maximum vacuum level select instrument 30 "H2O measurement conditions.

Take the test product about 1.3g (the recommended sample weight of the instrument), 2g, 3g, precision, set the instrument supporting the cylinder, so that the test product drowns the arc part of the bottom of the excess cylinder, put the measuring barrel in the dry test module (DPS).<br>The software loads the corresponding detection method, the instrument runs the "offset", "arrangement", "background" program, begins to analyze, export the test results, collect D10, D50, D90 data.<br>3 parallel tests for each weight.<br>The results of RSD measured under the weighing volume of 1.3g, 2g and 3g were 1.4%, 1.2% and 2.2% respectively, and the results all met the standard requirements, and the sample weighing for the test product had no obvious effect on the test results, so the recommended weight of 1.3g was selected as the determination condition.<br>9.1.2 Vacuum<br>Take the test product about 1.3g, precision, set the instrument supporting the cylinder, so that the test product does not excessive barrel bottom arc part, the measuring tube placed in the dry test module (DPS).<br>The D10, D50, D90 data are collected, and D10, D50, and D90 data are collected, respectively, under the conditions of vacuum of 15 " H2O, 20 " H2O, and 30 " H2O (maximum vacuum degree of the instrument).<br>3 in parallel for each vacuum degree.<br>Method parameters:<br>Measuring drift:<br>Measurement background:<br>Refractive index:<br>The results of the rsD of D10, D50 and D90 were 2.0%, 3.1%, and 3.0% respectively under the condition of vacuum of 15 x H2O, 20 x H2O, 30 , H2O, h2O, H2O, H2O, and D90, respectively, indicating that the vacuum degree had no obvious effect on the test results, and the vacuum degree was 15 "H2O to 30" H2O is suitable for microcrystalline cellulose particle size distribution detection.<br>Vacuum degree 30, H2O is the maximum vacuum and default vacuum degree of the instrument, in order to obtain the optimal dispersion effect of the sample, and prevent the vacuum degree from falling below 15 s" H2O, select the maximum vacuum degree of the instrument 30" H2O as the determination condition.

Take about 1.3g (recommended injection weight of the instrument), 2G and 3G of the test sample respectively, weigh accurately, and place them in the measuring cylinder matched with the instrument, so that the test sample can submerge the arc part at the bottom of the excessive cylinder, and place the measuring cylinder in the DPS.<br>The software loads the corresponding detection methods. After the instrument runs the "offset", "arrangement" and "background" programs, it starts to analyze, export the test results, and collect D10, D50 and D90 data.<br>3 parallel tests for each weight.<br>The RSD of the test results were 1.4%, 1.2% and 2.2% respectively under the conditions of weighing 1.3g, 2G and 3G, and the results met the requirements of the standard. The weighing of the test sample had no obvious influence on the test results, so the instrument recommended 1.3g as the test condition.<br>9.1.2 vacuum degree<br>Take about 1.3g of the test sample, weigh accurately, and place it in the measuring cylinder matched with the instrument, so that the test sample does not exceed the arc part at the bottom of the cylinder, and place the measuring cylinder in the DPS.<br>Measure under the conditions of 15 "H2O, 20" H2O and 30 "H2O (maximum vacuum of the instrument), and collect D10, D50 and D90 data.<br>3 parallel tests for each vacuum degree.<br>Method parameters:<br>Measurement drift:<br>Measurement background:<br>Refractive index:<br>The RSD of d10, D50 and D90 were 2.0%, 3.1% and 3.0% respectively under the conditions of 15 "H2O, 20" H2O and 30 "H2O, which indicated that the vacuum had no obvious influence on the test results. The vacuum degree of 15" H2O ~ 30 "H2O was suitable for the particle size distribution test of microcrystalline cellulose.<br>The vacuum degree of 30 "H2O is the maximum vacuum degree and default vacuum degree of the instrument. In order to obtain the best dispersion effect of the sample and prevent the vacuum degree from falling below 15" H2O, the maximum vacuum degree of 30 "H2O of the instrument is selected as the determination condition.<br>