Guoda Instrument is an integrated supplier of chromatography equipment and consumables for laboratory equipment. We provide high quality science for R&D, quality control, universities and research institutes in pharmaceutical, chemical, biological, food, cosmetics, R&D, third-party testing and other industries. Instruments, testing equipment, and various chromatographic accessories consumables chromatographic products grating infrared spectrophotometer because of its high resolution, high wave number accuracy, fast scanning speed, high sensitivity, etc., is currently the most ideal instrument for infrared identification of pharmaceutical raw materials. Strong specificity and easy operation! The "Infrared Spectral Collection of Drugs" contains a map of stable crystal forms of most pharmaceutical companies. The "Infrared Spectral Collection of Drugs (Vol. 4, 2010)" contains 124 infrared spectra of drugs. In the case of the varieties that contain infrared identification or inspection in the Pharmacopoeia of the People's Republic of China and the national drug standards, except for special circumstances, the spectrum sets are correspondingly collected for comparison. Infrared spectra are not included in the Pharmacopoeia of the People's Republic of China and the National Drug Standard. Other spectrograms can be used for comparison in drug testing. When the same compound is collected in different volumes (85/90/95/2000), the subsequent volume map shall prevail, and the pre-volume map is for reference only.
Chinese Pharmacopoeia requirements for analytical instruments: Wavenumber accuracy is changed from 2000~400±4cm-1 and 4000~2000cm-1±8cm-1 to ~1000±1cm-1 and ~3000±5cm-1 resolution, using polystyrene film Calibration instrument, peak-to-valley resolution depth 1583~1589cm-1>12%T; 2851~2870cm-1>18%T
Sample preparation: It is best to use KBr or KCI to compress tablets. Although the liquid method can eliminate the influence of crystal form, the solvent absorption is strong, the salt tablets are easy to be broken, and the solvents such as chloroform, carbon disulfide and carbon tetrachloride have certain toxicity. When the medicinal crystal form is not specified, the sample and the control substance may be recrystallized in parallel under the same conditions using an appropriate solvent, and the alignment may be determined according to law. For example, dexamethasone can be determined by recrystallization from acetone. If the medicinal crystal form has been specified, the corresponding medicinal crystal form should be compared according to law.
Infrared identification of the preparation: The pretreatment method is specified in the text of the variety, and the auxiliary materials are not interfered with, and the standard map of the raw material drug is compared. For example, carboplatin tablets and tegafur tablets. If the interference of the auxiliary material cannot be completely eliminated, the characteristic absorption peak of 3-5 components to be tested can be specified in the fingerprint area, and the error should be less than 0.5%.
Handling Precautions: Effects of moisture: peak shape, transparency, starting point. Effect of concentration; peak shape, fingerprint area; effect of grinding degree: crystal form, transparency; effect of ion exchange: hydrochloride-potassium chloride; blank sheet and background absorption: moisture, carbon dioxide, potassium bromide purity; instrument model The difference in performance and the purity of the sample.
The TJ270-30A infrared spectrophotometer equipped by Guoda Instrument Co., Ltd. is the first high-performance product adopting the principle of computer direct proportional recording. It adopts WINDOWS Chinese operation software, USB interface, provides professional verification scheme, standard audit trail workstation, purchase The host will present a solid analysis accessory kit and a liquid analysis accessory kit! The solid accessory package includes: tablet press, tableting die, agate mortar, temperature-controlled infrared oven, spectral pure KBr 50g); liquid analysis accessory package includes: 2 detachable liquid pools; 2 fixed liquid pools. TJ270-30A infrared spectrophotometer has high sensitivity, good reproducibility, long service life, no special requirements in the use environment, low price and low maintenance cost. It is an essential instrument for enterprise GMP certification, and it guides users to use, maintain and doubt. Difficult to analyze, escort for corporate certification and quality control, research and development!
The main technical parameters of TJ270-30A infrared spectrophotometer configured by Guoda Instrument Co., Ltd.: wavenumber range: 4000-400cm-1 wavenumber accuracy: ≤±4cm-1(4000-2000cm-1)≤±2cm-1 (2000-400cm- 1), resolution: 1.5cm-1 (near 1000cm-1) transmittance accuracy: ±0.2%T (no noise level) IO line flatness: ≤±2%T, stray light: ≤0.5% T (4000-650cm-1) ≤1%T (650-400cm-1) Test mode: three kinds: (transmittance absorbance single beam), scanning speed: five files (very fast, normal slow, very slow) slit Program: Five files (very wide and normal narrow and narrow), working mode: three (continuous scanning repeated scanning fixed wavelength scanning) horizontal and vertical coordinate expansion: arbitrary. For more information on infrared spectroscopy technical consultation and product purchase information, please call.
Guoda Instrument is an integrated supplier of chromatography equipment and consumables for laboratory equipment. We provide high quality science for R&D, quality control, universities and research institutes in pharmaceutical, chemical, biological, food, cosmetics, R&D, third-party testing and other industries. Instruments, testing equipment, and various chromatographic accessories consumable chromatographic products include: chromatographic reagents, liquid chromatography columns, quartz capillary columns, solid phase extraction cartridges, and UV xenon lamps and other special chromatographic accessories and consumables; Phase chromatograph, gas chromatograph, atomic absorption spectrophotometer, thin layer chromatography, ultraviolet spectrophotometer, electronic balance, biological safety cabinet, purification workbench and various laboratory drying ovens, incubators, biochemical instruments and Shaker and more product information, more product clicks; company email: [email protected]
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