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The measured specific gravity and bulk density of samples were 1.91 and 1 g/cm3, respectively.
We also measured specific gravity (SG) in each urine sample using a digital handheld refractometer (Atago).
We measured specific gravity of urine samples to account for the variability of metal excretion associated with spot urine samples (Mason and Calder 1994).
To account for urine dilution, we measured specific gravity using a hand-held refractometer (National Instrument Company Inc., Baltimore, MD) and measured creatinine concentration using a commercially available diagnostic assay (Vitros CREA slides; Ortho Clinical Diagnostics, Raritan, NJ).
To compensate for dilution, we measured specific gravity of urine using a digital refractometer (EUROMEX RD 712 clinical refractometer; EUROMEX, Arnhem, the Netherlands), and adjusted measured analyte concentrations to the mean specific gravity of all samples (1.020 g/mL).
Briefly, specific gravity adjusted urinary BPA concentrations were calculated by the formula Pc = P[(1.018 - 1)/ SG-1)], where Pc is the specific gravity adjusted BPA concentration (ng/ SG-1P is the measured unadjusted urinary BPA concentration, 1.018 is the sample population median specific gravity value, and SG is the measured specific gravity for each urine sample.
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The apparent extract (AE; in degree Plato) of the samples was estimated from the previously measured specific gravities (SG) using the approximations from Kobayashi et al. (2005b).
Electronic density meters can also be used to measure specific gravity.
Among the devices used to measure specific gravity are the Westphal balance, the pycnometer, and the hydrometer.
The hydrometer has a graduated scale on the side that allows one to measure specific gravity by observing where the surface of the liquid falls on the scale.
After we graded the potatoes, we had a short demonstration of how to measure specific gravity to determine percent dry matter.
More suggestions(15)
measured specific conductivity
measured specific conductance
measured specific heat
measured specific blood
measured specific growth
measured specific physiologic
measured specific airway
measured specific surface
measured specific capacitance
measured specific energy
measured specific power
measured specific protein
measured residual gravity
measured specific activity
measured specific phenotypic
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