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DGB-421 Portable Water ColoriMeter's video

294 plays · 2020-08-10
LeiCi DGB-421 Portable Water ColoriMeter
Product description
The LEICI DGB-421 portable water quality Colorimeter is calibrated with the platinum-cobalt chroma standard solution specified in the national standard GB 5750, and "degree" is used as the unit of Colorimeter.