Assertion: spectrophotometer | /r/HasProperty | calibrated by procedure
Facets:
Source sentences:
text: Many older spectrophotometers must be calibrated by a procedure known as "zeroing", to balance the null current output of the two beams at the detector.
text: Many older spectrophotometers must be calibrated by a procedure known as "zeroing.
text: Many older spectrophotometers must be calibrated by a procedure known as "zeroing.
text: Many older spectrophotometers must be calibrated by a procedure known as "zeroing.