功能

• It is the highest quality TDS standard solution calibrated and standardized in the factory using potassium chloride NIST 2202 SRM (reference material) in pure water for analysis according to ISO3696/BS3978.
• Charts of values at various temperature zones are printed on the bags.
• Recommended for those who use it infrequently or who always want high reliability.
• 1 bag has a capacity of 20 mL and is compact, making it convenient to carry and store.