Easy DryTM are absorbent pads saturated with a sterile, dehydrated culture medium. Each pad is pre-plated in a Petri dish and is immediately ready to use after pouring sterile distilled or deionized water on it. Easy DryTM are optimal for the examination of large sample volumes by the membrane filter method.
Easy DryTM Plate Count + TTC is a medium used for the determination of the total microbial content from food and animal feed, water and other materials.
This medium is based on the formula recommended by the American Public Health Association and ISO 4833, modified by the addition of TTC.
PREPARATION
1.
Cut open a bag and remove the number of Easy Dry plates needed.
2.
Moisten the pad contained
in the Petri dish with 2.2 ml of sterile distilled or deionized water.
3.
Wait 5 minutes before
using.
TEST PROCEDURE
Filter the sample through a filter membrane (0.45 µm pore diameter). Transfer the membrane onto a plate containing a just rehydrated pad. Incubate aerobically at 30°C for 72 hours.
INTERPRETING RESULTS
Examine the membrane for growth. Most colonies will be red due to reduction of TTC. Count all colonies, regardless of pigmentation, to obtain the total aerobic count. Report the count as CFU per ml of sample allowing for dilution factors.
APPEARANCE OF THE MEDIUM
Whitish pad. Yellowish once rehydrated.
STORAGE
Store at 10-25°C away from light. Do not
use the product beyond its expiry date on the label or if product shows any
evidence of contamination or any sign of deterioration.
SHELF LIFE
2 years.
