Standard Specification for Reagent Water (laboratory water quality standard)

Dengan mengacu kepada standar ASTM D1193-91 dan ISO 3696 , kita dapat memenuhi kebutuhan tsb

dengan teknologi pemurnian sistem membran.

Pada lembar berikut, disajikan standar air untuk reagent (reagent water) dengan mengacu kepada standar ASTM dan ISO.

Disajikan oleh : Imam rozali

Parameter Grade 1 Grade 2 Grade 3

Conductivity µS/cm (temp corrected) < 0.1 < 1 < 5

pH at 25°C N/A N/A 5.0 - 7.0

Oxidizable matter Oxygen (02)

content mg/L N/A < 0.08 < 0.4

Absorbance at 254 nm and 1 cm

optical path length, absorbance units < 0.001 < 0.01 N/A

Residue after evaporation on heating

at 110°C mg/kg N/A < 1 < 2

Silica (Si02) mg/L < 0.01 < 0.02 < N/A

ISO 3696 Standard This standard was last reviewed* in 2011

Specifies the requirements for three grades for the analysis of inorganic chemicals. Not applicable to organic trace analysis, analysis of surface-active agents and biological or medical analysis. The material shall be a clear, colourless liquid as assessed by inspection. Classifies according to the content: free from dissolved or colloidal ionic and organic contaminants, very low inorganic, organic or colloidal contaminants and suitable for laboratory wet chemistry work. Specifies the pH and conductivity measurement, the limit tests for oxidizable matter and for reactive silica, the measurement of absorbance and the determination of residue after evaporation at 110 °C.

ISO: International Organization for Standardization

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