OGYE ChromoSelect Agar Base

suitable for microbiology, NutriSelect® Plus

Oxytetracycline Glucose Yeast Extract Agar ChromoSelect, OGYE Agar Base ChromoSelect
Pricing and availability is not currently available.

Quality Level





shelf life

limited shelf life, expiry date on the label


agar, 12.0 g/L
chromogenic mixture, 1.1 g/L
dextrose, 20.0 g/L
yeast extract, 4.0 g/L

mfr. no.

NutriSelect® Plus


bioburden testing: suitable
microbiology: suitable (microbial identification)

final pH

7.0±0.2 (25 °C)

Featured Industry

Cleaning Products
Clinical Testing
Food and Beverages
Personal Care


selective and differential for Aspergillus spp.
selective and differential for Candida spp.
selective and differential for Penicillium spp.
selective and differential for Pichia spp.
selective and differential for Saccharomyces spp.
selective and differential for Zygosaccharomyces spp.
selective and differential for molds (General Media)
selective and differential for yeasts (General Media)

Related Categories


OGYE ChromoSelect Agar Base is a selective and differential medium which facilitates rapid isolation of yeasts and moulds from milk and milk products. Oxytetracycline makes the medium more selective by inhibiting the growth of Lactobacilli. A. niger appears as light blue colored colonies with black spores due to presence of chromogenic mixture, C. albicans shows green colored colonies and S. cerevisiae gives colorless colonies.

Preparation Note

Suspend 18.55 g in 500 ml distilled water. Boil to dissolve the medium completely. Sterilise by autoclaving at 121°C for 15 min. Cool to 50°C and aseptically add reconstituted contents of one vial of Oxytetra Selective Supplement (Cat. No. 51239). Mix well and pour into sterile petri plates.

Legal Information

NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Oxytetracycline-glucose-yeast extract agar for selective enumeration of moulds and yeasts in foods and clinical material.
D A Mossel et al.
The Journal of applied bacteriology, 33(3), 454-457 (1970-09-01)

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