Use instructions
Can be used in the "Chinese Pharmacopoeia" provisions of the method of Chinese herbal medicine and Pieces of sulfur dioxide residual pretreatment.
2015 version of "Chinese Pharmacopoeia" provides three kinds of sulfur dioxide detection methods: acid-base titration, gas chromatography, ion chromatography and so on. Gas chromatography and ion chromatography have the advantages of high sensitivity and strong specificity. However, the equipment is expensive and is not conducive to the popularization of the primary drug testing system. The acid-base titration method has the advantages of simple and low cost. It is the statutory test method. However, since the Pharmacopoeia only describes the glass apparatus of the method, the purchase, assembly and implementation of the complete set of devices need to be improved. For example: (1) In addition to the glass equipment, but also equipped with magnetic stirring, electric sets, titration platform, with a flow meter nitrogen device, and assembly. Many units feel that the purchase of equipment and more cumbersome, difficult to carry out the implementation of the assembly method can not carry out the detection method; (2) assembled a wide variety of devices, the use of nitrogen flow in the process of instability, uneven heating, easy to leak, (3) low efficiency, the current equipment using a single device, it is difficult to simultaneously handle multiple samples, the number of batches of multiple samples, the impact of cooling water and other issues, resulting in poor parallelism, low recovery rate directly affect the test results of the phenomenon; Secondary medicine at the same time test time and effort. Instrument Innovation:
1. Heating, distillation reflux, cooling, nitrogen blowing control, magnetic stirring, receiving six integrated design;
2. comes with cooling water inlet and outlet, need external cooling water cycle or water cooling;
3. Using far-infrared ceramic heating device instead of ordinary electric furnace or electric sets, more energy efficient, waterproof and good acid and alkali corrosion;
4. Can do two groups of samples at once, the heating power can be a single hole adjustment (knob type);
5. Additional nitrogen protection function, nitrogen blowing flow can be a single hole independent adjustment (60-600ml / min);
6. "Chinese Pharmacopoeia" original design reflow condenser
7. Receiving the bottom of the bottle built-in magnetic stirrer, stirring speed can be single-group monotonous;
New additions are as follows:
① different cooling methods: the use of compressor + air cooling double cooling mode, cooling effect is good, suitable for continuous batch processing samples, from room temperature;
② new anti-dry design, thermal overload protection, to prevent the burning of the flask dry;
③ new automatic timing function, according to pharmacopoeia requirements of the instrument can automatically countdown heating time to automatically stop;
④ new micro boiling heating system, so that the sample is more uniform heat, the detection structure is more reliable
Use instructions
Can be used in the "Chinese Pharmacopoeia" provisions of the method of Chinese herbal medicine and Pieces of sulfur dioxide residual pretreatment.
2015 version of "Chinese Pharmacopoeia" provides three kinds of sulfur dioxide detection methods: acid-base titration, gas chromatography, ion chromatography and so on. Gas chromatography and ion chromatography have the advantages of high sensitivity and strong specificity. However, the equipment is expensive and is not conducive to the popularization of the primary drug testing system. The acid-base titration method has the advantages of simple and low cost. It is the statutory test method. However, since the Pharmacopoeia only describes the glass apparatus of the method, the purchase, assembly and implementation of the complete set of devices need to be improved. For example: (1) In addition to the glass equipment, but also equipped with magnetic stirring, electric sets, titration platform, with a flow meter nitrogen device, and assembly. Many units feel that the purchase of equipment and more cumbersome, difficult to carry out the implementation of the assembly method can not carry out the detection method; (2) assembled a wide variety of devices, the use of nitrogen flow in the process of instability, uneven heating, easy to leak, (3) low efficiency, the current equipment using a single device, it is difficult to simultaneously handle multiple samples, the number of batches of multiple samples, the impact of cooling water and other issues, resulting in poor parallelism, low recovery rate directly affect the test results of the phenomenon; Secondary medicine at the same time test time and effort.
