Millipore Spectroquant Multy Operating Manual page 213

Standard solution of cyanuric acid
Preparation of a standard solution:
Dissolve 1.00 g of cyanuric acid with distilled water in a cali-
brated or conformity-checked 1000-ml volu metric flask and
make up to the mark with distilled water. The substance is
slightly soluble and the dissolution process may take several
hours.
The standard solution prepared according to this procedure has
a concentration of 1000 mg/l cyanuric acid.
Further investigational concentrations may be prepared from
this standard solution by diluting accordingly with distilled
water.
Stability:
When stored in a cool place (refrigerator), the standard so-
lution of 1000 mg/l and the diluted standard solutions
(investigational concentrations) remain stable for one day.
Standard solution of hydrazine
Preparation of a standard solution:
Dissolve 4.07 g of hydrazinium sulfate with oxyen-low (boil
previously) distilled water in a calibrated or conformity-checked
1000-ml volu metric flask and make up to the mark with oxyen-
low distilled water.
The standard solution prepared according to this procedure has
a concentration of 1000 mg/l hydrazine.
Further investigational concentrations may be prepared from
this standard solution by diluting accordingly with oxyen-low
distilled water.
Stability:
When stored in a cool place (refrigerator), the standard so-
lution of 1000 mg/l and the diluted standard solutions
(investigational concentrations) remain stable for one day.
Reagents required:
8.20358.0005 Cyanuric acid for
synthesis
1.16754.9010 Water for analysis
EMSURE®
Reagents required:
1.04603.0100 Hydrazinium sulfate
GR for analysis
1.16754.9010 Water for analysis
EMSURE®
Chapter 5.2 | Page 13 of 23