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GCSE Chemistry · key term
Checking or adjusting a measuring instrument against a known standard.
Used by OCR
Specification C3.3k, C4.2f · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Checking or adjusting an instrument against reference samples with known values so that its readings are reliable.
Revise: Measuring pHCalibration checks that the displayed values agree with known values.
Checking or adjusting an instrument against known standards so that its measurements can be trusted.
Do not claim that repeats remove systematic error. Repeats and a mean reduce the influence of random variation; calibration or a corrected method is needed for systematic error.
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Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Apparatus and techniquesCalibration can help identify such a problem.
Checking or adjusting a measuring instrument against a known standard so that its readings are accurate.