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Simplified sample preparation using frame spotting method for direct counting of total bacteria by fluorescence microscopy

Authors
Journal
Journal of Microbiological Methods
0167-7012
Publisher
Elsevier
Publication Date
Volume
59
Issue
3
Identifiers
DOI: 10.1016/j.mimet.2004.08.007
Keywords
  • Bacteria
  • Enumeration
  • Fluorescence Microscopy
  • Total Direct Count
  • Freshwater

Abstract

Abstract A new preparation method for direct counting of bacteria in liquid samples with fluorescence microscope was developed using a glass slide coated with 3-aminopropyltriethoxy silane and ring-shaped polyester seal as a retainer. The experimental steps of this method were spotting samples onto the coated slides with the seal, drying under vacuum, staining with SYBR Green II, drying and covering with immersion oil and coverslip to allow counting. This simplified method provided consistent results when compared with the conventional filtration method for fluorescence microscopy, and is rapid, inexpensive and reproducible.

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