Skip to Content
Merck

1.05269

Antibiotic agar no. 11

NutriSelect® Plus, USP, EP, FDA, powder, for bacteria, for Micrococcus spp., pkg of 500 g

Synonym(s):

GROVE and RANDALL medium no. 11

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

NACRES:
NA.74
UNSPSC Code:
41106213

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Antibiotic agar no. 11, NutriSelect® Plus, USP, EP, FDA, powder, for bacteria, for Micrococcus spp., pkg of 500 g

agency

EP
USP

reg. compliance

FDA

form

powder

packaging

pkg of 500 g

manufacturer/tradename

NutriSelect® Plus

storage condition

(Tightly closed. Dry.)

technique(s)

microbe id | susceptibility testing: suitable
microbiological culture: suitable

color

yellow to brown

pH

8.2-8.4 (25 °C in H2O)

application(s)

microbiology
pharmaceutical

storage temp.

15-25°C

suitability

Micrococcus spp.
bacteria

Quality Level

200

Related Categories

Analysis Note

Appearance (clearness): clear
Appearance (colour): yellowish-brown
Solidification behaviour (2 hrs., 40 °C): liquid
pH-value (25 °C): 8.2 - 8.4
Growth (Kocuria rhizophila ATCC 9341): fair to good
Inhibition zone diameter/Ampicillin 10 µg (Kocuria rhizophila ATCC 9341):
Inhibition zone diameter/Erythromycin 15 µg (Kocuria rhizophila ATCC 9341):
Growth (Staphylococcus aureus ATCC 6538-P (WDCM 00033)): good to very good
Inhibition zone diameter/Kanamycin 30 µg (Staphylococcus aureus ATCC 6538-P (WDCM 00033)):
Inhibition zone diameter/Neomycin 30 µg (Staphylococcus aureus ATCC 6538-P (WDCM 00033)):
Growth (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)): good to very good
Inhibition zone diameter/Oleandomycin 15 µg (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)):
Inhibition zone diameter/Neomycin 30 µg (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)):

Application

Antibiotic agar no. 11 is used for the microbiological assay of antibiotics in pharmaceutical preparations, body fluids, animal feed preparations, and other materials.

Disclaimer

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.

General description

Antibiotic agar no. 11 is recommended for the microbiological assay of antibiotics in pharmaceutical preparations, body fluids, animal feed preparations, and other materials. The sample material can be tested by dilution and diffusion methods. The most common method is the agar diffusion test which can be performed as a cylinder, punched-hole, or paper-disc test. The culture medium is inoculated with the relevant test strain and poured into plates. Defined quantities of the antibiotic under examination and an antibiotic standard are applied as spots (cylinder, punched hole, paper discs). On incubation, inhibition zones develop around the site of application. There is no microbial growth within these zones, and their diameter is a measure of the activity of the antibiotic being tested. The activity of the antibiotic under test is determined by comparing the diameter of its inhibition zone with that of the antibiotic standard.Carbohydrate and potato infusion promote the growth of yeasts and molds, while the low pH partially inhibits the accompanying bacterial flora. If the medium is to be used for fungal growth, the pH should be adjusted to approximately 3.5. Fungi grow on this medium to develop typical morphology.

Legal Information

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Global Trade Item Number

SKUGTIN
1.05269.050004022536062693

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service