What's the difference between gravimetry and hydrometry?

Gravimetry

Definition:

Example Sentences:

Definition:

(n.) The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.
(n.) The art or operation of measuring the velocity or discharge of running water, as in rivers, etc.

Example Sentences:

(1) In a children's Hospital, one-third of urine specimens will be of insufficient volume for standard hydrometry.
(2) Highly significant correlations were achieved between the TOBEC Phase value and fat-free mass (FFM) determined by densitometry (FFMd) and hydrometry (FFMdw) with values ranging from 0.713 to 0.981.
(3) The volume of 41 samples was inadequate for hydrometry.
(4) Body composition was predicted for 114 middle-aged and elderly individuals aged 35-90 y by using total-body electrical conductivity (TOBEC), densitometry, and hydrometry.
(5) Body composition measures included densitometry, hydrometry, bone mineral density of the one-third distal radius, and TOBEC.
(6) Fat-free mass (FFM) was calculated by using one-, two-, and three-compartment models: densitometry, FFMd; densitometry and hydrometry, FFMdw; and densitometry, hydrometry, and bone mineral density, FFMdwb.
(7) In urines not containing dissolved macromolecules, hydrometry, refractometry and osmolality reliably reflect the degree of concentration.
(8) Twelve moderately overweight women were confined to a metabolic unit for a period of 8 wk, 2-wk baseline and 6-wk reduction periods, during which changes in body composition were assessed by densitometry and hydrometry.