lactometer การใช้

In 1881 he introduced an apparatus for the testing of milk ( lactometer, patent # 241655 ).
He obtained aid from the Board of Health in suppressing the gases emanating from the gas houses, and opposed its action in adopting the " lactometer with the senses " as the sole means of testing the purity of milk.
After breaking the Tatarinov's lactometer, getting into a fight with Katya over that, and Katya's taking the blame, they become fast friends and Sanya frequents the Tatarinov house, helping the old woman with the household.
Hydrometers are calibrated for different uses, such as a lactometer for measuring the density ( creaminess ) of milk, a saccharometer for measuring the density of sugar in a liquid, or an alcoholometer for measuring higher levels of alcohol in spirits.