1.08158

Potassium dichromate standard solutions in sulfuric acid (0.01N)

test set for calibrating the absorbance of spectrophotometers

• Synonym(s): Standard potassium dichromate solutions
• UNSPSC Code: 41116107
• NACRES: NA.24

Properties

• grade: analytical standard
• Quality Level: 100
• technique(s): UV/Vis spectroscopy: suitable
• application(s): environmental; pharmaceutical
• format: mixture
• storage temp.: 15-25°C

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 ± 0.02
Absorbance (235 nm; 50 mg/l): 0.601 - 0.641
Absorbance (257 nm; 50 mg/l): 0.702 - 0.742
Absorbance (313 nm; 50 mg/l): 0.222 - 0.262
Absorbance (350 nm; 50 mg/l): 0.516 - 0.556
Absorbance (235 nm; 100 mg/l): 1.222 - 1.262
Absorbance (257 nm; 100 mg/l): 1.424 - 1.464
Absorbance (313 nm; 100 mg/l): 0.464 - 0.504
Absorbance (350 nm; 100 mg/l): 1.051 - 1.091

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable