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THE ADVANTAGES OF A PLATINUM TUBE DROPPING PIPETTE FOR MAKING COLONY COUNTS
Author(s) -
DAVIS J. G.,
BELL JEAN S.
Publication year - 1958
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1958.tb00137.x
Subject(s) - pipette , reproducibility , drop (telecommunication) , biomedical engineering , tube (container) , materials science , chromatography , chemistry , computer science , medicine , composite material , telecommunications
SUMMARY: For routine purposes where a large number of tests is involved the dropping pipette technique has many advantages over other methods of determining the colony count. However, glass pipettes are fragile and much time and labour have to be used in making and calibrating replacements. A robust platinum tube dropping pipette has been found very satisfactory. No difficulty was experienced in obtaining complete sterility of the pipettes in the technique described, and reproducibility of drop size was good.