9-19离心风机参数

9-19离心风机参数 9-19/9,26型高压离心通风机 风机用途: 9-19/9,26型高压离心通风机，一般用于锻冶炉及高压强制通风，亦可用于输送物料、空气及无腐蚀、不自燃、不易爆、不易挥发、不含粘性物质之气体。介质温度一般不超过50?，最高不超过80?， 3介质中所含尘土及硬质颗粒物不大于150mg/m。 风机型式: 1、9-19/9,26型高压离心通风机均为单吸入，通常有? 4、4.5、5、5.6、6.3、7.1、8、9、10、11.2、12.5、14、16，共13个机号。 2、风机通常制成右旋和左旋两种型式。 3、风机的出口位置以机壳的出口角度表示，“左”、“右”风机机壳制成0度、45度、90度、135度、180度、225度。 风机结构: 9-19、9,26型高压离心通风机主要由叶轮、机壳、进风口、支架等组成。 (1)叶轮:9,19型风机为12片叶片，9,26型风机为16片叶片，均属前弯型。叶轮扩压器外缘最高圆周线速度不得超过140m/s，叶轮成形后，经静、动平衡校正，故运转平稳。 (2)机壳:用普通钢板焊接成蜗形壳整体。 (3)进风口:做成收敛式流线型的整体结构，用螺栓固定在前盖板上。 (4)传动组:由主轴、轴承箱、联轴器等组成。主轴由优质钢制成，轴承箱整体结构。采用滚动轴承，滚动轴承，用润滑脂润滑。 9-19型高压离心风机性能参数 电动机 转速 全压 流量 内效率 内功率 所需功率 机号 传动方式 序号 r/mi功率 3Pa m/h % % kW 型号 n kW 1 3584 824 70 1.16 1.5 Y90l-2 2.2 2 3665 970 73.5 1.33 1.7 3 3647 1116 75.5 1.48 1.9 4 A 2900 4 3597 1264 76 1.64 2.1 Y100L-2 3 5 3507 1410 75.5 1.80 2.3 6 3384 1558 73.3 1.97 2.6 7 3253 1704 70 2.17 2.6 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 1 4603 1174 71.2 2.07 2.5 Y112M-2 4 2 4684 1397 75 2.38 2.9 3 4672 1616 77 2.68 3.2 4.5 A 2900 4 4580 1839 77.3 2.98 3.6 Y132S1-2 5.5 5 4447 2062 76.2 3.29 3.9 6 4297 2281 73.8 3.63 4.4 7 4112 2504 70 4.03 4.8 1 5697 1610 72.7 3.43 4.1 Y132S2-2 7.5 2 5768 1932 76.2 3.98 4.8 3 5740 2254 78.2 4.50 5.4 5 A 2900 4 5639 2576 78.5 5.04 5.8 Y160M1-2 11 5 5517 2844 77.2 5.54 6.4 6 5323 3166 74.5 6.17 7.1 7 5080 3488 70.5 6.86 7.9 1 7182 2262 72.7 6.05 7.0 Y160M1-2 11 2 7273 2714 76.2 7.02 8.1 3 7236 3167 78.2 7.93 9.1 5.6 A 2900 4 7109 3619 78.5 8.88 10.2 Y160L-2 18.5 5 6954 3996 77.2 9.76 11.2 6 6709 4448 74.5 10.88 12.5 7 6400 4901 70.5 12.09 13.9 1 9149 3220 72.7 10.91 12.5 Y160L-2 18.5 2 9265 3865 76.2 12.65 14.5 3 9219 4509 78.2 14.30 16.4 6.3 A 2900 4 9055 5153 78.5 16.00 18.4 Y200L1-2 30 5 8857 5690 77.2 17.59 20.2 6 8543 6334 74.5 19.60 22.5 7 8148 6978 70.5 21.7 25.1 1 11717 4610 72.7 19.83 23.3 Y200L2-2 37 2 11868 5532 76.2 22.99 27.0 3 11807 6454 78.2 25.99 30.5 7.1 D 2900 4 11596 7376 78.5 19.09 34.1 Y250M-2 55 5 11340 8144 77.2 31.98 37.5 6 10935 9066 74.5 35.63 41.8 7 10426 9988 70.5 39.62 46.5 1 15034 6594 72.7 36.02 42.3 Y280S-2 75 2 15229 7913 76.2 41.75 49.0 3 15151 9232 78.2 47.21 55.4 8 D 2900 4 14877 10550 78.5 52.83 62.0 Y315S-2 110 5 14546 11649 77.2 58.08 68.2 6 14021 12968 74.5 64.71 75.9 7 13362 14287 70.5 71.95 84.4 8 D 1450 1 3620 3297 72.7 4.5 5.5 Y132M-4 7.5 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 2 3665 3957 76.2 5.22 6.1 3 3647 4616 78.2 5.90 6.9 4 3584 5275 78.5 6.60 7.7 Y160L-4 15 5 3507 5825 77.2 7.26 8.5 6 3384 6484 74.5 8.09 9.5 7 3231 7144 70.5 8.99 10.6 1 4597 4695 72.7 8.11 9.5 Y160L-4 15 2 4655 5633 76.2 9.41 11.0 3 4632 6572 78.2 10.63 12.5 9 D 1450 4 4551 7511 78.5 11.90 14.0 Y180L-4 22 5 4453 8294 77.2 13.08 15.4 6 4297 9233 74.5 14.58 17.1 7 4101 10171 70.5 16.21 19.0 1 5408 6440 76.5 13.38 15.7 Y200L-4 30 2 5941 7942 80 16.03 18.8 3 2891 9445 81.5 18.59 21.8 10 D 1450 4 5740 10947 81 21.12 24.8 Y225S-4 37 5 5495 12450 78.2 23.84 28.0 6 5244 13952 74.5 26.79 31.4 7 4958 15455 70 29.88 35.1 1 7364 9047 76.5 23.58 27.7 Y225M-4 45 2 7491 11158 80 28.25 33.2 3 7428 13269 81.5 32.76 38.4 11.2 D 1450 4 7236 15380 81 37.22 43.7 Y280S-4 75 5 6927 17491 78.2 42.02 49.3 6 6609 19602 74.5 47.21 55.4 7 6246 21713 70 52.66 61.8 1 3182 5990 76.5 6.84 8.0 Y180L-6 15 2 3237 7388 80 8.20 9.6 3 3210 8785 81.5 9.51 11.2 11.2 D 960 4 3128 10182 81 10.82 12.7 Y209L2-6 22 5 2996 11580 78.2 12.19 14.3 6 2860 12978 74.5 13.70 16.1 7 2705 14375 70 15.28 17.9 1 9229 12577 76.5 40.84 47.9 Y280S-4 75 2 9390 15512 80 48.92 57.4 3 9310 18447 81.5 56.72 66.6 12.5 D 1450 4 9068 21381 81 64.46 75.6 Y315S-4 110 5 8678 24316 78.2 72.76 85.4 6 8278 27251 74.5 81.75 95.9 7 7822 30186 70 91.18 107.0 Y200L2-6 22 1 3975 8327 76.5 11.85 13.9 12.5 D 960 2 4043 10270 80 14.20 16.7 Y250M-4 37 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 3 4009 12213 81.5 16.46 19.3 4 3907 14156 81 18.71 21.9 5 3741 16099 78.2 21.11 24.8 6 3571 18042 74.5 23.72 27.8 7 3377 19985 70 26.46 31.1 1 11668 17670 76.5 71.97 84.5 Y315M-4 132 2 11874 21793 80 86.22 101.2 3 11771 25916 81.5 99.96 117.3 14 D 1450 4 11464 30040 81 113.56 133.3 Y355M-4 220 5 10967 34163 78.2 128.22 150.5 6 10457 38286 74.5 144.06 169.1 7 9878 42409 70 160.69 188.6 1 5004 11699 76.5 20.89 24.5 Y250M-6 37 2 5090 14428 80 25.02 29.4 3 5047 17158 81.5 29.01 34.0 14 D 960 4 4917 19888 81 32.97 38.7 Y315S-6 75 5 4709 22618 78.2 37.21 43.7 6 4494 25348 74.5 41.81 49.1 7 4249 28078 70 46.63 54.7 1 15425 26377 76.5 140.31 164.6 Y355M3-4 315 2 15700 32531 80 168.09 197.2 3 15563 38686 81.5 194.89 228.7 16 D 1450 4 15151 44841 81 221.46 259.9 JS138-4 410 5 14488 50995 78.2 249.98 293.3 6 13808 57150 74.5 280.88 329.6 7 13035 63305 70 313.29 367.6 1 6570 17463 76.5 40.72 47.8 Y315S-6 75 2 6683 21538 80 48.78 57.2 3 6627 25613 81.5 56.56 66.4 16 D 960 4 6456 29687 81 64.27 75.4 Y315L1-6 110 5 6180 33762 78.2 72.55 85.1 6 5898 37837 74.5 81.52 95.7 7 5575 41912 70 90.92 106.7 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 9-26型高压离心通风机性能参数 电动机 转速 全压 流量 内效率 内功率 所需功率 机号 传动方式 序号 r/mi功率 3Pa m/h % % kW 型号 n kW 1 3852 2198 74.70 3.11 3.7 2 3820 2368 75.5 3.28 3.9 3 3765 2536 75.7 3.46 4.1 4 A 2900 4 3684 2706 75 3.56 4.4 Y132S-2 5.5 5 3607 2877 73.8 3.86 4.6 6 3502 3044 72.1 4.06 4.9 7 3407 3215 70 4.29 5.2 1 4910 3130 76.1 5.51 6.3 Y132S2-2 7.5 2 4863 3407 77.1 5.87 6.8 3 4776 3685 77.1 6.24 7.2 4.5 A 2900 4 4661 3963 76 6.64 7.6 Y160M2-2 11 5 4545 4237 74.5 7.06 8.1 6 4412 4515 72.3 7.54 8.7 7 4256 4792 70 7.98 9.2 1 6035 4293 77.2 9.12 10.5 Y160M2-2 15 2 5984 4706 78.2 9.80 11.3 3 5869 5114 78 10.48 12.0 5 A 2900 4 5725 5527 76.7 11.23 12.9 Y160L-2 18.5 5 5553 5941 74.9 12.00 13.8 6 5381 6349 72.7 12.81 14.7 7 5180 6762 70 13.65 15.7 1 7610 6032 77.2 16.09 18.5 Y180M-2 22 2 7546 6612 78.2 17.27 19.9 3 7400 7185 78 18.47 21.2 5.6 A 2900 4 7218 7766 76.7 19.79 22.8 Y200L1-2 30 5 7000 8346 74.9 21.15 24.3 6 6781 8919 72.7 22.57 26.0 7 6527 9500 70 24.06 27.7 1 9698 8588 77.2 28.99 33.3 Y225M-2 45 2 9616 9415 78.2 31.12 35.8 3 9429 10230 78 33.28 38.3 6.3 A 2900 4 9195 11056 76.7 35.66 41.0 Y250M-2 55 5 8915 11883 74.9 38.12 43.8 6 8636 12699 72.7 40.67 46.8 7 8310 13525 70 43.35 49.9 7.1 D 2900 1 12427 12292 77.2 52.70 61.8 Y280S-2 75 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 2 12321 13475 78.2 56.57 66.4 3 12078 14643 78 60.49 71.0 4 11776 15826 76.7 64.84 76.1 Y315S-2 110 5 11415 17009 74.9 69.30 81.3 6 11055 18177 72.7 73.94 86.8 7 10635 19360 70 78.82 92.5 1 15955 17584 77.2 95.72 112.3 Y315M-2 132 2 15818 19277 78.2 102.73 120.5 3 15504 20947 78 109.86 128.9 8 D 2900 4 15112 22640 76.7 117.75 138.2 Y315L-2 200 5 14644 24332 74.9 125.85 147.7 6 14177 26003 72.7 134.28 157.6 7 13634 27696 70 143.14 168.0 1 3834 8792 77.2 11.96 14.0 Y180M-4 18.5 2 3802 9639 78.2 12.84 15.1 3 3729 10473 78 13.73 16.1 8 D 1450 4 3638 11320 76.7 14.72 17.3 Y200L-4 30 5 3529 12166 74.9 15.73 18.5 6 3421 13001 72.7 16.79 19.7 7 3294 13848 70 17.89 21.0 1 4869 12518 77.2 21.56 25.3 Y200L-4 30 2 4828 13723 78.2 23.14 27.2 3 4736 14913 78 24.75 29.0 9 D 1450 4 4620 16118 76.7 26.53 31.1 Y225M-4 45 5 4481 17322 74.9 28.35 33.3 6 4343 18512 72.7 30.25 35.5 7 4181 19717 70 32.24 37.8 1 6143 17172 80.4 35.69 41.9 Y250M-4 55 2 6056 19319 81.2 39.19 46.0 3 5920 21465 80.4 43.02 50.5 10 D 1450 4 2761 23612 78.6 47.10 55.3 Y280S-4 75 5 5560 25758 76 51.35 60.3 6 5309 27905 73 55.35 65.0 7 5065 30052 70 59.34 69.6 1 7747 24126 80.4 62.90 73.8 Y315S-4 110 2 7637 27142 81.2 69.07 81.0 3 7464 30157 80.4 75.82 89.0 11.2 D 1450 4 7264 33173 78.6 83.01 97.4 Y315M-4 132 5 7009 36189 76 90.50 106.2 6 6691 39205 73 97.54 114.5 7 6382 42221 70 104.58 122.7 Y225M-6 30 1 3346 15973 80.4 18.25 21.4 11.2 D 960 2 3299 17969 81.2 20.04 23.5 Y250M-6 37 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 3 3225 19966 80.4 22.00 25.8 4 2140 21963 78.6 24.09 28.3 5 3031 23959 76 26.26 30.8 6 2895 25956 73 28.31 33.2 7 2763 27953 70 30.35 35.6 1 9713 33540 80.4 108.91 127.8 Y315L1-4 160 2 9575 37732 81.2 119.60 140.3 3 9356 41925 80.4 131.30 154.1 12.5 D 1450 4 9103 46117 78.4 143.75 168.7 Y355M2-4 250 5 8782 50310 76 156.70 183.9 6 8381 54503 73 168.90 198.2 7 7993 58695 70 181.10 212.5 1 4179 22206 80.4 31.61 37.1 Y280S-6 45 2 4121 24981 81.2 34.71 40.7 3 4028 27757 80.4 38.10 44.7 12.5 D 960 4 3921 30533 78.6 41.72 49.0 Y315S-6 75 5 3785 33309 76 45.48 53.4 6 3615 36084 73 49.02 57.4 7 3450 38860 70 52.56 61.7 1 12285 47121 191.94 225.2 Y355M2-4 250 80.4 2 12109 53011 210.78 247.3 81.2 3 11830 58902 231.39 271.5 80.4 14 D 1450 4 11508 64792 253.33 297.3 78.6 JS138-4 410 5 11099 70682 276.16 324.1 76 6 10589 76572 297.66 349.3 73 70 7 10095 82463 319.16 374.5 1 5262 31197 80.4 55.70 65.4 Y315S-6 75 2 5188 35097 81.2 61.17 71.8 3 5071 38997 80.4 67.15 78.8 14 D 960 4 4936 42897 78.6 73.52 86.3 Y315L1-6 110 5 4764 46796 76 80.15 94.0 6 4549 50696 73 86.39 101.4 7 4341 54596 70 92.63 108.7 1 65.4 70339 80.4 374.22 439.1 JSQ-147-4(3000V) 500 2 71.8 79131 81.2 410.95 482.2 3 78.8 87923 80.4 451.14 529.4 16 D 1450 4 86.3 96716 78.6 493.92 579.6 JQS-158-4(3000V) 850 5 94.0 105500 76 538.43 631.8 6 101.4 114300 73 580.35 681.0 7 108.7 123090 70 622.26 730.2 1 6911 46569 80.4 108.60 127.4 Y355M2-6 185 16 D 960 2 6813 52390 81.2 119.26 139.9 Y355ML1-6 220 3 6659 58211 80.4 130.92 153.6 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen 4 6481 64032 78.6 143.34 168.2 5 6254 39854 76 156.25 183.3 6 5971 75675 73 168.42 197.6 7 5696 81496 70 180.58 211.9 arithmetic mean of the second determination as a result. Results one decimal. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than an average result of 0.2%. Determination of acidity of starches and definitions and principles: the acidity of starches: starch and its derivatives and emulsion standard sodium hydroxide solution consumed by the sample size. L0g 0.lmol/L standard sodium hydroxide solution consumed by the sample to represent the number of ml. Principle: starch emulsion by titration with sodium hydroxide standard solution until neutral consumption volume of the standard solution. This law applies to the acidity of not more than 12mL samples of starch and its derivatives. 2, reagent: determination process, only use analytical grade reagent and distilled water. Standard solution of sodium hydroxide: 0.1mol/L. Potassium hydrogen phthalate: base plain. Phenolphthalein indicator solution: 1g phenolphthalein in ethanol soluble in lOOmL, 95%. 3, equipment Erlenmeyer flask: volume 250m1 ... Basic glassware: volume 25m1 ... Carbonate titration tube: 50ral ... Analytical balance. Magnetic stirrer. Constant temperature oven: temperature controlled at 110 ? 1 ?. Dry: desiccant and has effectively adequate within a perforated metal plate. 4, the analysis step calibration of standard solution of sodium hydroxide to potassium hydrogen phthalate reference reagent at a temperature of 110 of the dry to constant weight in the oven and placed in dry cooling. Weighing after drying and cooling of potassium hydrogen