Abstract
Calibration may be defined as establishing and recording the measurement uncertainty of the measuring equipment. It does not involve adjustment but may show/demonstrate the necessity for adjustment. In simpler words, calibration is a technique in which a comparison between measurements of known magnitude or correctness is made or set with one device and another measurement made in a similar way with a second device. The device which is used as a reference generally has a known or assigned degree of correctness and is referred as standard. The second device which is to be calibrated is generally referred as the unit under test (UUT), test instrument (TI), etc.
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Notes
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Formula used is Specific gravity/equivalent weight × 1000 × % assay.
Suggested Readings
BiPM IEC, IFCC I, IUPAC I, ISO O (2012) The international vocabulary of metrology—basic and general concepts and associated terms (VIM 3rd edition). JCGM 200:2012
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Gandhi, K., Sharma, R., Gautam, P.B., Mann, B. (2020). Calibration and Standardization. In: Chemical Quality Assurance of Milk and Milk Products. Springer, Singapore. https://doi.org/10.1007/978-981-15-4167-4_6
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