Peptone salt solution (Maximum recovery diluent)

acc. ISO 6887 and ISO 8199 GranuCult

Pricing and availability is not currently available.

storage conditions

Store at +15°C to +25°C.

Quality Level


medium granules (dehydrated (DCM))

mfr. no.



microbiological culture: suitable
microbiology: suitable


6.8-7.2 (25 °C, 9.5 g/L in H2O, after autoclaving)


9.5 g/L

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Food and Beverages


heterotrophic bacteria

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Analysis Note

Appearance (clearness): clear
Appearance (color): colourless to slightly colourless
pH-value (25 °C): 6.8 - 7.2
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Inoculum on reference medium (Staphylococcus aureus ATCC 25923 (WDCM 00034)): ≤ 100
Inoculum on reference medium (Escherichia coli ATCC 25922 (WDCM 00013)): ≤ 100
Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)): ≤ 100
Colony count (Staphylococcus aureus ATCC 25923 (WDCM 00034)):
Colony count (Escherichia coli ATCC 25922 (WDCM 00013)):
Colony count (Escherichia coli ATCC 8739 (WDCM 00012)):
Recovery (Staphylococcus aureus ATCC 25923 (WDCM00034)): 70 - 130 %
Recovery on test medium (Escherichia coli ATCC 25922 (WDCM 00013)): 70 - 130 %
Recovery on test medium (Escherichia coli ATCC 8739 (WDCM 00012)): 70 - 130 %
Incubation: 45 minutes up to 1 hour at 20 - 25 °C
Reference medium: Tryptic Soy Agar 18 -24 hours at 35 - 37 °C, aerobic

Legal Information

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
The International Organization for Standardization (ISO) published the revised EN ISO 21528-1 and EN ISO 21528-2 standards in 2017.
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