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How do simple methods and instruments test drinking water quality?
- The TDS value represents the total amount of dissolved substances contained in each liter of water (mg). According to experience and related information, generally less than 50, safe to drink.In order to strictly control the water quality, it should be checked according to the national drinking water standard.s
What instrument errors can be eliminated by using the method of "left disk, right disk" and "average observation"?
- Effect of horizontal disc and alidade eccentric error by disk observations are averaged to eliminate left right;s
The difference between UV Vis spectrophotometry and fluorescence spectrophotometry
- UV Vis spectrophotometry, UV visible spectrophotometry is a qualitative and quantitative analysis methods and structure according to the material properties of the molecular absorption wavelength of 200-760nm the range of the electromagnetic wave is established. The operation is simple, the accuracy is high and the reproducibility is good. Long wave (small frequency) light, small energy, short wavelength (large frequency) of light energy. Spectrophotometry is the measurement of the degree of radiation absorption of matter molecules at different wavelengths and at specific wavelengths.s
What instrument can detect radiation, please?
- Formaldehyde is an organic compound, and radiation is a field energy, the two can not be confused. Radioactive materials are usually found in stone and ceramic materials, while formaldehyde is mainly found in paint, glue, wood and other materials.s
What instruments are needed for feed testing?
- Moisture meter, constant temperature and humidity, drying box, I hope I can help yous
Which is good for full automatic bacterial identification and drug sensitivity analyzer?
- VITEK2 automatic bacteria identification instrument specifications: VITEK2s
What kinds of analytical instruments and related applications have been invented by using X rays?
- A crystalline substance, has its special crystal structure, including lattice type, spacing and other parameters by X ray irradiation specimen with enough energy, in the sample of the material by the excitation, will produce two X ray fluorescence (mark X rays), crystal surface reflection crystal follow Prague's law. By measuring the diffraction angle (peak) qualitative analysis can compound, determination of integral intensity of spectral line (peak intensity) can make quantitative analysis and determination of changes in the relationship between the detection of spectral line intensity with angle of grain size and shape.s
DAD chemical analysis instruments
- DAD, also known as PDA, is the abbreviation of photo-diode-detector, that is, image diode array detector, which belongs to an ultraviolet detector. It is used in high performance liquid chromatography and gas phase detection.s