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Specifications

MacConkey agar is a selective and differential medium for detection of coliforms and other enteric organisms.
Catalog #	M1100
Appearance	Beige with pale pink tint, homogenous, free-flowing powder.
pH	7.1 ± 0.2 at 25°C
Microbiology	The medium was prepared according to formulation and inoculated with the organisms listed below. Cultures were incubated at 35±2°C in an aerobic atmosphere and examined for growth at 18-24 hours.
Enterococcus faecalis ATCC 29212	Partial to complete inhibition
Escherichia coli ATCC 25922	Growth
Proteus mirabilis ATCC 12453	Growth, partial inhibition of swarming
Salmonella typhimuriumATCC 14028	Growth
Directions per Liter	Dissolve 50 grams per liter of distilled/deionized (DDI) water, heating with stirring until completely solubilized. Dispense into appropriate containers, loosen caps and autoclave for 15 minutes at 121ºC (15psi).
Storage and Stability	Store powdered media at RT. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Prepared media should be kept at 4°C and used within a short period of time.
Important Note	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.