User Manual
Optical pH Sensors | User Manual
© PyroScience GmbH 17
4 STERILIZATION, CLEANING AND STORAGE
4.1 Cross Sensitivities
Do not use any organic solvents, surfactant solutions or antimicrobial agents (which can
be a compound commercial calibration buffers or certified reference materials (CRMs)
used for pH electrode). The sensor may have cross-sensitivity to substances in your
sample. Please contact us in doubt as irreversible damage of the sensor can occur with
some compounds (e.g. surfactants).
4.2 Sterilization
PyroScience optical pH sensors cannot be sterilized using beta or gamma radiation. Non-
sterilized pH-sensors (sensor spots, screw caps and vials) can be autoclaved once with
special precautions (details on request). The pH Minisensor cannot be autoclaved. The
sterilization is applicable for the pH sensors spots
PHSP5-PKx and PHSP5-ADH-PKx, for
pH screw caps (PHSC-PKx without fiber and packaging) and for pH sensor vials
(
PHVIAL20-PKx without lid).
Do not use bleach, ethanol, acetone or any solvent for sterilization.
For disinfection, it is possible to use 2% Glutaraldehyde.
Please note that we offer pre-sterilized pH sensor spots
PHSP5-ADH-STER-PK7 (not
autoclavable!).
4.3 Cleaning and Storage
After a measurement, the pH sensor should be rinsed carefully with deionized water and
let dry. The sensor has to be stored in a dry and dark place at room temperature. For all
sensors and fibers, put the black caps on the plug of the fiber to prevent that light is
entering the fiber possibly causing photo-bleaching of the indicator. Storage at high
humidity or in sunlight will destroy the sensor over time.
Store the sensor in a dry, dark and secure place at room temperature.