Home>Resources>Company News3NH TS4020 Liquid Colorimeter Obtains Authoritative Calibration Certification from CNAS-Accredited Institution

3NH TS4020 Liquid Colorimeter Obtains Authoritative Calibration Certification from CNAS-Accredited Institution


On June 18, 2025, the TS4020 Liquid Spectrophotometer independently developed by Guangdong Sainty Technology Co., Ltd. (Equipment No. 44000181) officially obtained a calibration certificate (Certificate No. ST202506060729) issued by Shenzhen Zhongce Metrology and Testing Technology Co., Ltd. (CNAS L16333). Through traceability testing with the national metrology standard instrument GBW(E)081630 Colorimetric Solution Reference Material, all performance indicators of the instrument comply with the first-class precision requirements of JJF1689-2018 Calibration Specification for Water Quality Colorimeters.

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