Osprey Scientific Inc.

Method

References: Method developed by CHEMetrics based on ASTM D 2194-79, Concentration of Formaldehyde Solutions. 

Glutaraldehyde-based disinfectants are used throughout the healthcare industry for cleaning and sterilizing. Many surfaces found in the medical, surgical, and dental environments are cleaned by dipping, wiping, or rinsing with glutaraldehyde solutions.

Glutaraldehyde-based disinfectants are also used to clean dialysis machines and reusable dialyzers.

In CHEMetrics' test, glutaraldehyde concentrations are determined by titration with sulfuric acid in the presence of sodium sulfite. Phenolphthalein is used as the end point indicator. A color change from colorless to pink signals the end of the titration. Results are expressed in percent (%) glutaraldehyde.