- 060050 Coliforms Count Plate III (Microbiological Testing Strip)
Microbiological Count Plate
For detection and counting of coliforms in water.
10 Pieces/ box (9 Slices / Piece)
060050 Coliforms Count Plate III (Microbiological Testing Strip)
Specifications: 10 Pieces/ box (9 Slices / Piece)
Application: Widely used in drinking water, natural mineral water for coliforma detection of source water.
How to use:
According to contamination of samples, elect the appropriate dilution, draw 3 pcs of 10 mL sample and applied to the 3 pcs of paper; then draw 3 pcs of 1 mL sample applied to 3 pcs of smaller paper; then another 1 mL aliquot diluted 10-fold, draw 3 pcs of 1 mL and applied to 3 pcs of smallest paper. Then gently flatten the bag, place in an incubator vertically upward and culture for 18 ~ 24h (35 ~ 37 ℃) , observe the results.
2.Results to determine:
Negative results: violet blue paper unchanged, regardless of flush or red spots which is judged as coliform negative.
Positive results: showing red spots or flush on the paper, and its surrounding show yellow or yellow throughout the paper which is judged as positive for coliform bacteria.
Check with Coliform MPN Table to do the report.
The count plate should be protected from light hypothermia (below 10 ℃) , and pay attention to moisture, if pink was found in the paper then the product is unavailable.
2.Confirmatory test methods:
To make confirmation test, using sterile forceps aseptically suspicious paper transplanted to lactose fermentation tube, culture at 37 ℃ for 24 hours, if acid and gas appears which would be judged as positive for coliform bacteria, otherwise judged as negative .