Potassium dichromate standard solutions in sulfuric acid (0.01N)

Description

• General description: Test set for calibrating the absorbance of spectrophotometers
• Application: Potassium dichromate standard solutions in sulfuric acid (0.01N) for calibrating the absorbance of spectrophotometers Applicable for quality control checks and system suitability tests May be used to calibrate a newly installed instrument or after a major repair of an instrument
• Analysis Note: Absorbance measured in a 10 mm cells at 20 ± 1 °C against sulfuric acid reference solution:                     50 mg/l                   100 mg/l 235 nm             0.621 ± 0.02             1.242 ± 0.02 257 nm             0.722 ± 0.02             1.444 ± 0.02 313 nm             0.242 ± 0.02             0.484 ± 0.02 350 nm             0.536 ± 0.02             1.071 ± 0.02Absorbance (235 nm; 50 mg/l): 0.601 - 0.641Absorbance (257 nm; 50 mg/l): 0.702 - 0.742Absorbance (313 nm; 50 mg/l): 0.222 - 0.262Absorbance (350 nm; 50 mg/l): 0.516 - 0.556Absorbance (235 nm; 100 mg/l): 1.222 - 1.262Absorbance (257 nm; 100 mg/l): 1.424 - 1.464Absorbance (313 nm; 100 mg/l): 0.464 - 0.504Absorbance (350 nm; 100 mg/l): 1.051 - 1.091