An improved ferric chloride test for differentiating Proteus-Providence group from other Enterobacteriaceae.

The sensitivity in vitro of the Providence group of enteric bacteria to 14 antibiotics and nitrofurantoin.

During the course of an investigation into the antibiotic sensitivity of strains of the Proteus group of bacteria isolated from infections of the urinary tract (Middleton, 1957) a few strains of the Providence group were also examined. This group of the Enterobacteriaceae called type 29911 by Stuart, Wheeler, Rustigian, and Zimmerman (1943), and named Providence by Kauffmann (1951), has close a...

A rapid test for Proteus species.

Rapid identification of Proteus species can represent a significant saving of time in the medical bacteriology laboratory. It is usually 2 days from receipt of the specimen to the reading of the differential slant. At this point, it is customary to inoculate one of the urea media (Edwards and Ewing, Identification of Enterobacteriaceae, Burgess Publishing Co., Minneapolis, 1955), read the resul...

Primary plating medium for differentiating the colonies of the genus Proteus from certain other enteric bacteria.

Use of bile-esculin agar for rapid differentiation of Enterobacteriaceae.

Bile-esculin agar has been used for several years for the presumptive identification of group D streptococci. All members of the Enterobacteriaceae family will also grow on this medium, but only certain ones can hydrolyze esculin to 6,7-dihydroxycoumarin, which reacts with iron to produce a characteristic blackening of the medium. One thousand and six cultures from clinical specimens representi...

Nitrate removal from water using alum and ferric chloride: A comparative study of alum and ferric chloride efficiency

Background: Nitrate is an acute and well-known hazardous contaminant, and its contamination of water sources has been a growing concern worldwide in recent years. This study evaluated the feasibility of nitrate removal from water using the traditional coagulants alum and ferric chloride with lower concentrations than those used in the conventional coagulation process. Methods: In this research...