48716

Gassner Agar

suitable for microbiology, NutriSelect^® Basic

• Synonym(s): Water Blue Metachrome-yellow Lactose Agar according to Gassner
• UNSPSC Code: 41171609
• NACRES: NA.74

Properties

• sterility: non-sterile
• Quality Level: 100
• form: powder
• shelf life: limited shelf life, expiry date on the label
• composition: agar, 13 g/L ; lactose, 43 g/L ; metachrome yellow, 1.25 g/L ; peptone, 14 g/L ; sodium chloride, 5 g/L ; water blue, 0.62 g/L
• manufacturer/tradename: NutriSelect^® Basic
• technique(s): microbiological culture: suitable
• final pH: 7.2±0.2 (25 °C)
• application(s): agriculture; bioburden testing; environmental; food and beverages; microbiology
• suitability: selective and differential for Escherichia coli; selective and differential for coliforms; selective and differential for enterobacteriaceae

Description

Application

Selective agar for the detection and isolation of pathogenic Enterobacteriaceae in food and other material according to Gassner.

Preparation Note

Dissolve 76.87 g in 1 litre distilled water. Autoclave at 121°C for 15 minutes.

Footnote

We offer two media types: the superior granulated GranuCult^® and the cost-efficient powdered NutriSelect^® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

Legal Information

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

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves