Westphal balance
A Westphal balance (also known as a Mohr balance) is a scientific instrument used to measure the density of liquids.[1][2][3]
Accurate specific gravity determinations with the Westphal balance are possible only when the weight of water displaced by the plummet at 15° and the weights of the riders possess an exact multiple relationship among themselves.[4] Deviations from this relationship can produce errors of significant magnitude.
References
[edit]- ↑ Mohr-Westphal balance, Virtual Museum of the History of Mineralogy
- ↑ Westphal Balance Archived 2014-03-23 at the Wayback Machine, Instruments for Natural Philosophy
- ↑ Balance de Westphal, Le Compendium
- ↑ Tschudy, Edward A. (1922-10-01). "THE EFFECT OF VARIATION IN WEIGHT OF THE RIDERS AND PLUMMETS OF THE WESTPHAL BALANCE UPON THE ACCURACY OF SPECIFIC-GRAVITY DETERMINATIONS". Journal of the American Chemical Society. 44 (10): 2130–2135. doi:10.1021/ja01431a006. ISSN 0002-7863.
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