Air quality. Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy. Membrane filter method

2015 ◽  
Keyword(s):  
Air Quality ◽  
Optical Microscopy ◽  
Phase Contrast ◽  
Membrane Filter ◽  
Number Concentration ◽  
Filter Method ◽  
Membrane Filter Method

MEMBRANE FILTER METHOD FOR DETERMINATION OF COLIFORMS IN PASTEURIZED AND CERTIFIED MILK

1953 ◽  
Vol 16 (1) ◽  
pp. 6-8 ◽  
Author(s):  
Richard Ehrlich
Keyword(s):  
Agar Medium ◽  
Membrane Filter ◽  
Filter Method ◽  
Membrane Filter Method ◽  
Determination Methods ◽  
Future Reference

The use of the membrane-filter method for determination of coliform organisms in pasteurized and certified milk permits a more rapid counting of coliform colonies with the elimination of much of the plating procedure used with the conventional determination methods. Results of analysis for coliform content can be preserved on the membranes for future reference. Large quantities of milk can be examined rapidly through the use of the centrifuge in the method outlined. Endo-agar was used in this work as the differential agar medium.

The Microbiological Quality of Honey as Determined by Aerobic Colony Counts

1993 ◽  
Vol 56 (4) ◽  
pp. 336-337 ◽  
Author(s):  
JOSEP SERRA BONVEHI ◽  
ROSSEND ESCOLÁ JORDÁ
Keyword(s):  
Membrane Filter ◽  
Microbiological Quality ◽  
Plate Count ◽  
Filter Method ◽  
Filter Methods ◽  
Plate Counts ◽  
Multifloral Honey ◽  
Plate Count Method ◽  
Membrane Filter Method

The number of mesophilic aerobic colonies was determined in 72 samples of mono- and multifloral honey from various sources by the plate count and the membrane filter methods. The presence of motile colonies made the plate counts unreliable. The microorganism producing these colonies was identified as Bacillus alvei. Colony counts could only be carried out in 27 of the samples when using the plate count method, while with the membrane filter method the number of colonies was counted in all the samples.

scholarly journals Improved Membrane Filter Method for Fecal Coliform Analysis

1975 ◽  
Vol 29 (4) ◽  
pp. 532-536 ◽  
Author(s):  
Robert E. Rose ◽  
Edwin E. Geldreich ◽  
Warren Litsky
Keyword(s):  
Fecal Coliform ◽  
Membrane Filter ◽  
Filter Method ◽  
Membrane Filter Method
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