Rapid screening for bacteriuria using a particle counter, pulse-height analyser, and computer.

Rapid screening for bacteriuria using a particle counter, pulse-height analyser, and computer.

A system for the rapid screening of urines for the presence of bacteriuria has been devised using a Coulter Counter Model ZBI linked to a multichannel pulse-height analyser (Coulter "Channelyser") with computer analysis of the output. In a series of 215 urines containing growth of a single pathogen of more than 100 x 10(6)/l (greater than 100 000/ml) satisfactory level of sensitivity (99.1%) wa...

Mitochondria of Tetrahymena pyriformis: enumeration and sizing of isolated organelles using a Coulter Counter and pulse-height analyser.

An electronic particle counter (Coulter Counter ZBI) and pulse-height analyser (Channelyzer C1000) have been used to measure numbers and sizes of mitochondria isolated from the ciliated protozoon Tetrahymena pyriformis. Differential centrifugation of disrupted organisms, followed by single-step sub-fractionation of the mitochondrial fraction on sucrose gradients yielded a population of organell...

Rapid detection of lactobacillus and yeast concentrations using a particle size distribution analyser.

AIMS To see the possibility of particle size distribution analyser (PSDA) in detecting concentration of lactobacillus contaminants in yeast fermentation. METHODS AND RESULTS A PSDA was used to rapidly determine the size and concentration of lactobacillus and Saccharomyces cerevisiae. Data showed that the aerodynamic diameters of Lactobacillus casei and S. cerevisiae cells were around 0.63 and...

Screening for bacteriuria.

A photometric screening for significant bacteriuria.