Rapid determination of specific gravity of semi-solid bituminous substances

1929 ◽  
Vol 1 (1) ◽  
pp. 39-40
Author(s):  
S. E. Berkenblit
Keyword(s):  
Specific Gravity ◽  
Rapid Determination ◽  
Semi Solid ◽  
Bituminous Substances

scholarly journals The rapid determination of carcass fat by the Foss-Let specific gravity technique

1976 ◽  
Vol 36 (3) ◽  
pp. 567-570 ◽  
Author(s):  
C. J. H. Woodward ◽  
P. Trayhurn ◽  
W. P. T. James
Keyword(s):  
Specific Gravity ◽  
Rapid Determination ◽  
Reference Method ◽  
New Method ◽  
Storage Lipid ◽  
Structural Lipid ◽  
Nutritional Studies

1. Carcass fat was determined by extraction with tetrachloroethylene and measurement of the solvent's change in density. The results were comparable in precision to those of a reference method; the new method extracted storage lipid but little structural lipid.2. The technique is simple, rapid and appropriate for many nutritional studies.

A suspension weighing technique for the rapid determination of specific gravity of eggs

1969 ◽  
Vol 9 (37) ◽  
pp. 131 ◽  
Author(s):  
RAE Pym
Keyword(s):  
Specific Gravity ◽  
Breaking Strength ◽  
Rapid Determination ◽  
White Leghorn ◽  
Salt Solutions ◽  
Egg Weight ◽  
Closed Population ◽  
Impact Device ◽  
The Impact

A suspension weighing technique, developed for the rapid determination of the specific gravity of eggs, is described and compared with one using salt solutions of known density. A simple impact device was used to determine shell strength for correlation with the results of specific gravity determinations. Eggs were obtained from three strains of domestic fowl : White Leghorn, .Australorp, and Synthetic (a closed population in its eighth generation originally based on White Leghorn-Australorp crosses). The numbers of eggs examined in one hour by suspension weighing, salt solutions, and the impact device were 400, 200, and 100 respectively. Repeatabilities of specific gravity based on three eggs per hen were slightly higher for suspension weighing than for salt solutions. Correlations between specific gravity and breaking strength ranged from +0.72 to +0.78 for the three strains. Correlations between egg weight and specific gravity and between egg weight and breaking strength were effectively zero. It is concluded that for routine work, measurement of specific gravity by suspension weighing is a reliable and rapid method of estimating shell strength.

Method for Rapid Determination of Specific Gravity

1940 ◽  
Vol 1 (2) ◽  
pp. 149-152 ◽  
Author(s):  
C. F. JACOBSEN ◽  
K. LINDERSTRØM-LANG
Keyword(s):  
Specific Gravity ◽  
Rapid Determination

METHODS FOR RAPID DETERMINATION OF SPECIFIC GRAVITY OF SINGLE SEEDS AND SEED SAMPLES AND THE CORRELATION OF SPECIFIC GRAVITY WITH OIL CONTENT

1963 ◽  
Vol 43 (2) ◽  
pp. 151-156 ◽  
Author(s):  
S. H. Pawlowski
Keyword(s):  
Specific Gravity ◽  
Oil Content ◽  
Rapid Determination ◽  
Correlation Coefficients ◽  
Accurate Method ◽  
Flax Seed ◽  
Seed Particles ◽  
Oil Percentage ◽  
Single Seeds

The specific gravities of seed of 14 safflower varieties were determined by three methods and correlated with oil percentages. Displacing a weighed quantity of seed in. water or mercury proved to be an accurate method of determining the specific gravity of seed samples. However, displacement in mercury is a more rapid method. The specific gravity of individual seeds or seed particles was determined rapidly with a density gradient tube but this method was not practical with large seed samples.A correlation coefficient of r = − 0.91 (P < 0.01) was obtained between specific gravity and oil content of safflower embryos. The correlation coefficients between specific gravity and oil percentage in flax seed, rapeseed, and dehulled sunflowers were −0.90, −0.84, and −0.90 (P < 0.01), respectively.

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