What is the silicate concentration for Type 1 reagent water?

What is the silicate concentration for Type 1 reagent water?

• A. 0.05 mg/L
• B. 0.1 mg/L
• C. 1.0 mg/L
• D. Not specified

Answer: (A)

Silicate is kept at an extremely low level in Type I reagent water because even small amounts can interfere with sensitive analytical procedures and readings. Type I water is used for the most exacting measurements, so controlling inorganic contaminants like silica helps avoid artifacts, precipitation, or extra background in instrumentation. The standard limit for silicate in Type I water is 0.05 mg/L, which is why that value is the correct one. A higher limit such as 0.1 mg/L or 1.0 mg/L would allow more silicate contamination and could compromise accuracy, while “not specified” would contradict the established purity requirements.

Silicate is kept at an extremely low level in Type I reagent water because even small amounts can interfere with sensitive analytical procedures and readings. Type I water is used for the most exacting measurements, so controlling inorganic contaminants like silica helps avoid artifacts, precipitation, or extra background in instrumentation. The standard limit for silicate in Type I water is 0.05 mg/L, which is why that value is the correct one. A higher limit such as 0.1 mg/L or 1.0 mg/L would allow more silicate contamination and could compromise accuracy, while “not specified” would contradict the established purity requirements.