IMPROVEMENTS IN MANOMETRIC MICRO-KJELDAHL AND BLOOD UREA METHODS

The Estimation of Non-Protein Nitrogen in Blood by a Micro-Kjeldahl Method.

A steam distillation apparatus suitable for micro-Kjeldahl analysis.

Improvements in the determination of urea using diacetyl monoxime; methods with and without deproteinisation.

A rapid and reproducible method is described for measurement of urea in biological materials (after deproteinisation) and in serum (without deproteinisation). Urea is colorimetrically determined with diacetyl monoxime and thiosemicarbazide in the presence of sulphuric acid, phosphoric acid and ferric chloride. The sensitivity of the colorimetric reaction and stability of the colour are enhanced...

A Micro Manometric Method for the Determination of Diphosphopyridine Nucleotide

In the course of histochemical studies of the retina, it was desired to determine the diphosphopyridine nucleotide content of single microtome sections of tissue weighing on the order of 10 to 50 y. It was, therefore, necessary to increase the sensitivity of the manometric method for the determination of DPN. To this end, the technique of Linderstrom-Lang (6) with the Cartesian diver was employ...

Rapid Micro-Chemical Methods for Blood and CSF Examinations

301 the restoration of his organism's uniformity of motivation as a whole. Furthermore, with his concomitantly greater bionomic facility in communication through the spoken word or symbol, this functional realignment will contribute immeasurably to the adjustment of human relations throughout social groups" (p. 293). It is understandable why to a man of Dr. Burrow's astronomical fancy the relat...