Introduction: Methylene blue spectrophotometry is often used for the determination of water quality anionic detergent items. This method is stable in detection and has a wide range of adaptability, but the manual operation process is cumbersome and labor-intensive. The solvent chloroform causes great harm to the staff. The fully automatic anionic surfactant analyzer in water is fully designed in accordance with the requirements of the national standard method. The user only needs to put the sample into the sample tray and automatically complete the whole process of sample solution ratio, pretreatment, analysis, data processing, etc. Personnel intervention on duty, intelligent control, free detection of any sample without restriction, stable data accuracy Detection principle: The extractant and methylene blue are automatically added to the water sample, and after multiple extractions, it is moved into the washing solution for back extraction, and then automatically sucked into the photometer flow cell for measurement. Methylene blue interacts with anionic surfactants to generate blue salts, which can be extracted by the extractant and enter the flow cell. According to the national "GB 7494-87" standard, the anionic surfactants in the extract are determined at a wavelength of 652nm. Features: 1. The extraction of extractants and reagents, extraction, back-extraction, separation, sample injection, detection, and cleaning are all automatically completed without manual operation. 2. The fully enclosed automatic extraction function ensures that the staff does not need to contact the extraction agent in the whole process of detection, which improves the safety 3. The instrument has a built-in touch screen and its own control system, which can realize all the functions of the above detection system without connecting to a computer. 4. The integrated design of the sampling system and the water sample processing system greatly reduces the floor space 5. The whole process of sample detection is automated, and functions such as automatic sample injection, automatic extraction, automatic water removal, automatic detection, automatic storage, and automatic cleaning are realized, and batch samples can be automatically and continuously detected. 6. The imported oil-water separation membrane is used instead of anhydrous sodium sulfate to filter out water and impurities, and the service life is longer 7. Using a high-precision syringe to quantitatively add liquid volume, the extraction ratio can be adjusted according to needs Technical parameter: Measurement items: Anionic surfactants in tap water, surface water, sewage Measurement method: methylene blue spectrophotometry (GB7494-87, GB/T5750.4-2006) Operation mode: single-machine automatic batch sample measurement, 7-inch touch screen control, automatic printing of results Liquid feeding method: precision syringe combined with peristaltic pump to improve measurement accuracy and efficiency Measurement time: 10 to 20 minutes Standard sample preparation: automatically configure standard samples and standard curves of different concentrations Extraction rate: >95% Linear coefficient: >0.999 Measuring range: 0.10～2.0mg/L (calculated by LAS standard solution) Amount of water sample: 100mL Measurement wavelength: 652nm Absorbance range: 0.0000～3.0000A Power requirements: 220V±10%, 50Hz, 200W
Introduction: Methylene blue spectrophotometry is often used for the determination of water quality anionic detergent items. This method is stable in detection and has a wide range of adaptability, but the manual operation process is cumbersome and labor-intensive. The solvent chloroform causes great harm to the staff. The fully automatic anionic surfactant analyzer in water is fully designed in accordance with the requirements of the national standard method. The user only needs to put the sample into the sample tray and automatically complete the whole process of sample solution ratio, pretreatment, analysis, data processing, etc. Personnel intervention on duty, intelligent control, free detection of any sample without restriction, stable data accuracy Detection principle: The extractant and methylene blue are automatically added to the water sample, and after multiple extractions, it is moved into the washing solution for back extraction, and then automatically sucked into the photometer flow cell for measurement. Methylene blue interacts with anionic surfactants to generate blue salts, which can be extracted by the extractant and enter the flow cell. According to the national "GB 7494-87" standard, the anionic surfactants in the extract are determined at a wavelength of 652nm.
