Skip to Content
Merck
All Photos(1)

Documents

1.10404

Millipore

GranuCult® plus Letheen-Agar Base modified

according to FDA-BAM, suitable for microbiology

Synonym(s):

Letheen Agar, Letheen Modified Agar, Modified Letheen Agar

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
41106213
NACRES:
NA.74

Agency

according to FDA-BAM

Quality Level

200

sterility

non-sterile

form

granular

packaging

pkg of 500 g

manufacturer/tradename

GranuCult® plus

storage condition

protect from light (Keep tightly closed and dry)

technique(s)

microbiological culture: suitable

color

beige

pH

7.0-7.4 (25 °C, 52.1 g/L in H2O, after autoclaving)

solubility

52.1 g/L

application(s)

cosmetics
microbiology

storage temp.

15-25°C

suitability

Enterococcus spp.
Escherichia coli
Pseudomonas spp.
Salmonella spp.
Staphylococcus spp.

General description

GranuCult® plus Letheen Agar Base is used for the microbiological sampling of environmental surfaces that are treated with disinfectants. It is a highly nutritious medium containing Lecithin and Tween® 80 for neutralizing quaternary ammonium compounds contained in sanitizers. Beef extract and tryptone provide nitrogen, carbon, sulfur, and other essential growth factors. Glucose is the source of energy, and agar is the solidifying agent. The media is a modification of the AOAC formulae.

Application

GranuCult® plus Letheen Agar is used to neutralize quaternary ammonium compounds, for sampling of environmental surfaces that have been treated with disinfectants.

Features and Benefits

  • GranuCult® offers superior granulated culture media.
  • Safe and sustainable due to reduced risks associated with fine dust and toxic substance inhalation, resulting in a safer work environment.
  • Excellent wettability, solubility, and free-flowing properties
  • Convenient, with minimal component separation and clumping, even under warm or humid conditions.
  • High batch-to-batch reproducibility
  • Prolonged shelf life of up to five years
  • High number of test strains exceeding all regulatory demands
  • Granulation technology allows many supplements to be included, with no need to add these separately

Analysis Note

Appearance (clearness): turbid
Appearance (colour): yellowish-brown
pH-value (25 °C): 7.0 - 7.4
Growth (Enterococcus faecalis ATCC 29212 (WDCM 00087)): good to very good
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): good to very good
Growth (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): good to very good
Growth (Staphylococcus aureus ATCC 25923 (WDCM 00034)): good to very good
Growth (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)): good to very good
Growth (Salmonella typhimurium ATCC 14028 (WDCM 00031)): good to very good
Incubation: 24 - 48 hrs.; 35 °C; aerobic.

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
TWEEN is a registered trademark of Croda International PLC

related product

Product No.
Description
Pricing

Storage Class Code

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

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