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Dear Customers, Partners, and All Employees, As the golden autumn brings refreshing breezes and the fragrance of osmanthus fills the air, we are approaching the Mid-Autumn Festival and National D...

Introduction: PFAS Regulations Intensify – Is Your Laboratory Ready? As global regulations on per- and polyfluoroalkyl substances (PFAS) become increasingly stringent, food and food packaging safety...

I. New Standards Launch: Compliance Testing Faces Fresh Challenges Recently, the Ministry of Agriculture and Rural Affairs, the National Health Commission, and the State Administration for Market...

On the Core Value of Reference Materials in Implementing GB5009.168-2016 The national standard GB5009.168-2016 "Determination of Fatty Acids in Foods" provides a unified benchmark for the entire ...

As global regulations on Per- and Polyfluoroalkyl Substances (PFAS) become increasingly stringent (e.g., the EU standard EN 17681-1:2025 is now in effect, and multiple domestic standards like HJ, GB...

A major investigation by CCTV Finance in March 2026 has exposed the illegal use of prohibited substances, including clove eugenol derivatives and industrial alcohol, to anesthetize live fish in aqua...

The 2026 edition of the National Food Safety Standard for Maximum Residue Limits (MRLs) of Pesticides will officially come into effect on March 1st. In accordance with the Food Safety Law of the ...

I. Core Principle Ammonia nitrogen (as free ammonia or ammonium ions) reacts with Nessler’s reagent to form a pale reddish-brown complex. Absorbance is measured at 420 nm, with intensity proportiona...

Cobalt Chloride Solution Reference Material for Colorimetry In the field of chemical reagent quality control, the national standard General Rules for the Determination of Carbonizable Substance...