OPTIMIZATION OF FECAL FLOTATIONS IN MARINE PARASITOLOGY AND DETERMINATION OF THE SPECIFIC GRAVITY OF HELMINTH EGGS IN PINNIPEDS

2021 ◽  
Vol 52 (3) ◽  
Author(s):  
Jacob S. Rodgers ◽  
Paula A. Schaffer ◽  
Cara L. Field ◽  
Lora R. Ballweber ◽  
Ashley K. McGrew
Keyword(s):  
Specific Gravity ◽  
Helminth Eggs

Determination of Specific Gravity of Live Hogs by Suppressed Zero Techniques

1967 ◽  
Vol 26 (1) ◽  
pp. 50-57
Author(s):  
V. M. Hix ◽  
A. M. Pearson ◽  
E. P. Reineke ◽  
T. A. Gillett ◽  
L. J. Glacoletto
Keyword(s):  
Specific Gravity

A SIMPLE RAPID METHOD FOR DETERMINATION OF SPECIFIC GRAVITY OF SMALL SAMPLES OF URINE

PEDIATRICS ◽  
1959 ◽  
Vol 24 (5) ◽  
pp. 814-818
Author(s):  
Allen S. Goldman
Keyword(s):  
Specific Gravity ◽  
Present Report ◽  
Total Sample ◽  
Mineral Oil ◽  
Small Samples ◽  
Gradient System ◽  
Small Opening ◽  
Flotation Method ◽  
Made In

THE THERAPY of infants with disturbances in fluid balance is greatly assisted by knowledge of the specific gravity of the urine. Frequently only a few milliliters can be collected at any one time, while a minimum sample of 25 ml is necessary for use of the smallest urinometers currently available. The existing methods of determining specific gravity of one drop of urine are somewhat laborious, and require expensive equipment and the services of a relatively skilled technician. The present report describes a method which is rapid and simple and requires only a few drops of urine in its use. It is similar in principle to the determination of specific gravity of blood by the copper-sulfate method. For use with urine, mixtures are employed of two relatively nonvolatile liquids, immiscible with water, and with specific gravities nearly equally above and below the range in urine. The specific gravity of urine is determined by allowing one drop to fall into each of a series of tubes containing a mixture of the two liqquids made up to various specific gravities ranging from 1.005 to 1.030 (Fig. 1). That mixture in which the drop of urine comes most nearly to remaining still (neither rising nor falling after coming to rest) approximates the specific gravity of the urine. The total sample needed is only a few drops, which can be quite small if a dropper with a small opening (2 mm) is used. The determination takes a few minutes. A year's supply of the mixtures can be made in one afternoon and costs less than $6.00. MATERIALS The two solutions used were selected from the flotation method of Kirk, using a density gradient system. These are Liquid 1, dibutyl-n-phthalate (Eastman), specific gravity 1.04820°; and Liquid 2, kerosene, specific gravity 0.8220°. (Similar results were obtained by substituting California mineral oil, specific gravity 0.842-0.88420°, for kerosene.)

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.

Falling Drop Method for Determination of Specific Gravity of Urine

1963 ◽  
Vol 39 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Martha Winstead ◽  
R. L. Markey
Keyword(s):  
Specific Gravity ◽  
Drop Method

scholarly journals Determination Of Quality Of Milk From Different Genotype Of Dairy Cows

1970 ◽  
Vol 37 (1) ◽  
pp. 52-56 ◽  
Author(s):  
MR Islam ◽  
MN Hassan ◽  
MSR Siddiki ◽  
MAS Khan ◽  
MA Islam
Keyword(s):  
Specific Gravity ◽  
Dairy Cows ◽  
Protein Content ◽  
Milk Sample ◽  
The Other ◽  
Test Protein ◽  
Quality Of Milk ◽  
Genotype A

The present study was conducted to investigate the milk quality from different genotype. A total 48 dairy cows belong to different genotypes such as Holstein cross, Jersey cross, Sahiwal cross and Red Chittagong were selected. Milk compositional viz. specific gravity, Acidity test, Fat test, Protein test, Solids-not-fat (SNF) test and total solids (TS) test were carried out. It was observed that the higher specific gravity of milk was obtained from Jersey cross and Red Chittagong genotype, which was significantly higher (P<0.01) than the other genotype of dairy cows. The highest acidity (%) was observed (0.165±0.014) in Red Chittagong and the lowest acidity (0.118±0.025) in Sahiwal cross. The highest fat (%) was observed from Red Chittagong cows milk which was statistically higher from Jersey cross and Sahiwal cross and the lowest fat (%) was found in the milk of Holstein cross cows. The highest SNF value was obtained from Jersey cross and the lowest from Sahiwal cross. On the other hand, Holstein cross and Red Chittagong was nearly similar. Red Chittagong milk sample showed the highest TS value and the lowest value was observed from Holstein cross. The highest protein value was found from Red Chittagong and the lowest from Holstein cross but the protein content of other two genotypes were nearly similar. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9868 BJAS 2008; 37(1): 53-56

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