Colony Counter Compatibility Mode

Power points aren't mine unless otherwise stated. (◠‿◠✿)

1. Colony Counter

2. Colony counter

3. Colony counter
•A colony counteris an instrument
used to count coloniesof bacteriaor
other microorganismsgrowing on an
agar plate.
•An instrument designed to
conveniently count or assist
counting colonies of microorganisms
on a plate containing a gelled growth
medium.

4. Colony counter
•One variety uses a pencil-like rod with a metal
tip, which is connected by an electrical
connection to the gelled growth medium; when
touched to a colony on the plate, the completion
of the electrical circuit causes an increment of 1
unit on the readout of the colony counter.

5. Early counters Recent counters
•Early counters were merely
lighted surfaces on which the
plate was placed, with the
colonies marked off with a felt-
tipped penon the outer
surface of the plate while the
operator kept the count
manually.
•More recent counters attempt
to count the colonies
electronically, by identifying
individual areas of dark and
light according to automatic or
user-set thresholds, and
counting the resulting
contrasting spots.

6. (for the automatic colony counter)

7. 1.Place the
Petri-dish
on the colony
counter
2. Count a Petri-dish by clicking the count button
on the software.

8. •3.The results will be displayed indicating the
number of colonies.

9. The Recent Colony Counter
•The automatic colony counter has the ability to
separate the image of combined colonies for the
user to magnify each colony.
•The recent colony counter is connected to a PC.

10. For the old/digital colony counter

11. The Old Colony Counter
1.Place the colony counter on the lighted surface
with the colonies marked off with a felt-tipped
pen on the outer surface.
2.Keep the count manually

12. Comparison
Recent Old
•Is indeed faster and easier to
use
•More efficient for observation.
•Hard to use
•Manual counting
•Not so efficient compare to the
recent