Scope of application of dryer
Type B uses the national standard GB7148-81 and the international ISO7150/1-1948 standard salicylic acid photometric method as the basic test means, supplemented by sample colorimetric reaction pretreatment, to achieve rapid and accurate colorimetric determination of samples, with stable,SensitiveReliable and mercury-free.
Dryer is mainly used for mineral processing, building materials, metallurgy, chemical industry and other departments to dry a certain humidity or particle size of materials. The dryer is widely used in tea, Chinese herbal medicine, corn, vegetables, food, chicken manure, slag, towel quilt cover, sawdust, coal slime, desulfurization gypsum, compound fertilizer, honeysuckle, straw briquetting fuel, charcoal machinery, wood pellet fuel, sawdust briquetting, agricultural and animal husbandry engineering and other industries. The main types of dryer are, drum dryer, three return dryer, three drum dryer, intermittent dryer, direct heat dryer, clothes drying dryer, powder dryer, stone professional dryer, new dryer, second-hand dryer, industrial dryer, tea dryer, Chinese herbal medicine dryer, corn dryer, vegetable dehydration dryer, food dryer, chicken manure dryer, tumble dryer, drum dryer, drum dryer, stone dryer, rotary dryer, flux dryer, full-automatic dryer, petroleum dryer, electric heating dryer, energy-saving dryer, clothing dryer, towel quilt dryer, computer intelligent dryer, steam dryer, gas dryer, slime dryer, slag dryer, sludge dryer, quartz sand dryer, sand dryer, fly ash dryer, desulfurization gypsum dryer, sawdust dryer, tunnel dryer, dehydration dryer, compound fertilizer dryer, honeysuckle dryer, wine trough dryer, etc.
Key words: heat exchange equipment
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Type of ammonia nitrogen analyzer
Ammonia nitrogen analyzer according to the different test standards, there are A, B type. Type A is GB7479-87 by Nessler' s reagent colorimetric method. Type B adopts the national standard GB7148-81 and the salicylic acid photometric method specified in the international ISO7150/1-1948 as the basic testing method, supplemented by the sample colorimetric reaction pretreatment, to realize the rapid and accurate colorimetric determination of the sample, which has the advantages of stability, sensitivity, reliability and mercury-free.
Operation steps of ammonia nitrogen analyzer
Pour distilled water or ultra-pure water into a cuvette (about 2/3 height); wipe the water marks and fingerprints on the outer wall with a non-falling paper towel or soft cloth, then put it into the measuring seat of the instrument and cover the shading cover.
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