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Kumar, Comparative Analysis of Different Air Density Equations, MAPAN-J. It depends on how much fun you want with this experiment. For this experiment we used 5 cups, but you can use 2 or 3 cups. Garg, Measurement Technique of Large Volumetric Vessels by Gravimetric Method, 7th International Conference on Advances in Metrology (AdMet-2009), February 18–20 (2009), CSIR - NPL, New Delhi. Tap Water Salt 5 pieces of paper with numbers 1 through 5 Saltwater Density Setup. International comparison of volume measurement standards at 50 L at the CENAM (Mexico), PTB (Germany), Measurement Canada and NIST (USA), Metrologia, 39 (2002) 91–95 Gopan, Re-establishment of National Standards of Mass at NPL India, MAPAN-J. Chung, Monitoring of the Drift of the Pt–Ir Kilogram Prototypes of KRISS, Traceable to BIPM As-Maintained Mass Unit, MAPAN-J. Sharma, Relevance of Dimensional Metrology in Manufacturing Industries, MAPAN-J. Aswal, Contributions of National Standards on the Growth of Barometric Pressure and Vacuum Industries, MAPAN-J.
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In this paper, we have discussed the detailed procedure of volume measurement of 2000-L volumetric vessel and its associated uncertainty calculations using gravimetric method.Ī. But due to influencing factors of environmental conditions of laboratory, change of density of supplied tap water, conversion factors of tap water and distilled water in desire temperature, we have restricted our calibration and measurement capability (CMC) up to 100 mL in 2000 L.
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In this process, we have achieved measurement uncertainty less than 50 mL in 2000 L. Hence, tap water is used and every time the density of tap water is measured against distilled water to improve the accuracy of the measurement. Eggs don’t always sink in water, however. Since water has a density of 1 g/ml, we now know the density of an egg is greater than 1g/ml. This event actually gave us our first indication of an egg’s density: the eggs sank. In general, for the calibration of volumetric instruments, distilled water is used as the medium but in the case of large volumetric vessels (say 2000 L), the use of distilled water is not practical. Many of us have put eggs into a pan of water when preparing to make boiled eggs. In the last couple of years, NPLI has provided number of calibration services of volumetric vessels up to 2000 L (unique facility in India) to the petroleum industries, flow meter manufacturing industries, etc. Being a National Metrology Institute (NMI) of India, CSIR-National Physical Laboratory, India (NPLI), provides calibration services to the industries to improve the quality of products.