Overview
TONGAO TR 6900B desktop STIP-scan is a device that can quickly determine COD and ammonia nitrogen values in water. It integrates mature technologies in the field of water quality analysis, so that the analysis system is complete, the operation is simple and fast, and the detection results are stable and reliable. Widely used in emergency monitoring, industrial wastewater, domestic sewage, sewage treatment, chemical industry, food, beverage, Spinning & weaving printing and dyeing, Eletroplating, papermaking, petroleum metallurgy, river treatment, R & D institutions, colleges and universities and other fields.
Features
1. Built-in two COD detection methods: HJ/T399-2007 (national standard) and import detection method
2. Standard test parameters include COD (prefabricated), COD (powder pack) and ammonia nitrogen (NH3-N).
3. Strong scalability in the later stage, support parameters such as total phosphorus, total nitrogen, suspended solids, turbidity, total chromium, hexavalent chromium, copper, iron, nickel, zinc, etc
4. Colorimetric digestion tube, digestion and result reading share a reaction tube
5. Direct display of concentration results without conversion
6. Multiple measurements and removal of outliers to improve accuracy
7. Detect abnormal prompt functions, such as blank comparison and overrange prompt
8. Large amount of data storage, can store 30,000 records
9. Built-in thermal printer and 5-inch high-definition color LCD screen
10. High batch processing capacity, supports 16/25 water samples/batch
Principle
The digestion Colorimetric integrated tube is used for operation, and the digestion and result reading of the sample share a reaction tube without transferring the liquid. The instrument uses a cold light source of a specific wavelength to measure the sample Absorbance, which is directly converted into the concentration value through a system-specific algorithm. Perform 10 or more measurements on the water sample, remove the abnormal value and take the average value to reduce the influence of external factors. At the same time, it has the function of detecting abnormal prompts.
Applications
Emergency monitoring, industrial wastewater, domestic sewage, sewage treatment, chemical industry, food, beverage, Spinning & weaving printing and dyeing, Eletroplating, papermaking, petroleum metallurgy, river treatment, R & D institutions, colleges and universities
Standards
HJ/T399-2007、HJ535-2009
Steps
1. Sample Handling Using Digestion Colorimetric Tubes
2. Put the reaction tube into the instrument for testing
3. Absorbance measurement and concentration calculation
4. Directly read the display results
5. Optional printing or storing data
Notice
• Make sure to use compatible 16mm or 25mm round Colorimetric tubes
• Note that the COD digestion environment is 165 ° C, and the time is 15-20 minutes
• Ammonia nitrogen detection does not require digestion
• Avoid operating under conditions where the environment temperature exceeds 5~ 40 ° C or the humidity exceeds 85%
• Periodic inspection Instrument Optical inspection Stability
• Pay attention to abnormal cues such as blank contrast or overrange
• Ensure that information such as sample ID is complete when storing data
