A, product overview

Intelligent bench dissolved oxygen (do) tester is applicable to large, medium and small water and industrial and mining enterprises, life or industrial water dissolved oxygen (do) concentration detection, in order to control the water dissolved oxygen (do) required water quality standards.

Second, the principle:
The instrument application microcomputer optoelectronic colorimetric detection principle replace traditional visual colorimetric method. Eliminate the human error, so measuring resolution greatly improve. Measurement, when measured water sample into reagent, the water will become orange. Then will the water sample in the photoelectric comparator block, instrument will through comparing orange depth so as to get the concentration of dissolved oxygen size.

Three, features:
1. Microcomputer, touch the keyboard is convenient to use.
2. Can be zero and 1 ~ 5 point automatic calibration.
3. The instrument adopt unique semiconductor luminescence device (the patent number is 99226785.2), the light source live longer than incandescent lamp (about 350 hours) several orders of magnitude higher than about tens of hours.
4. High resolution. Instrument resolution of 0.01 mg/L.

Four, method of use
Turn on the power switch, will pour water glass sample tank, with strong suction soft cloth or paper dry glass sample tank outside the water stain (finger don't direct contact with the glass sample tank surface, lest in the glass sample tank surface leave fingerprint, the impact test results), into the reagent (1) and (2) of the three drops, shake the static buy 3-5 minutes, add reagent (3) three drops after shake in sample tank base, covered sample tank cover, wait a few seconds after reading can display digital stability.