Assertion: glass electrode | /r/HasProperty | calibrated before use
Facets:
value: always
type: TEMPORAL
Source sentences:
text: The existence of these phenomena means that glass electrodes must always be calibrated before use; a common method of calibration involves the use of standard buffer solutions.
text: The existence of these phenomena means that glass electrodes must always be calibrated before use; a common method of calibration involves the use of standard buffer solutions.