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R2A Agar 500g

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Thermo ScientificTM OxoidTM

Enumerate heterotrophic bacteria from drinking water samples with Thermo Scientific™ Oxoid™ R2A Agar (Dehydrated). This nutritionally reduced medium was specially designed to enhance the recovery of stressed and chlorine damaged bacteria from treated water samples. Stressed or injured organisms during water treatment are unable to grow on high nutrient media since faster-growing organisms outgrow the former. Therefore the use of a low nutrient medium like R2A Agar incubated for longer incubation periods allows these stressed organisms to grow well.

R2A Agar, Oxoid Composition

Typical Formula*

gm/litre

Yeast extract

0.5

Proteose peptone

0.5

Casein hydrolysate

0.5

Glucose

0.5

Starch

0.5

Di-potassium phosphate

0.3

Magnesium sulphate

0.024

Sodium pyruvate

0.3

Agar

15.0

pH 7.2 ± 0.2 @ 25°C

 

R2A Agar, Oxoid Preparation:
Suspend 18.1g in 1 litre of distilled water. Bring to the boil to dissolve completely. Sterilise by autoclaving at 121°C for 15 minutes. Mix well and pour into sterile Petri dishes.

Storage conditions and Shelf life
R2A Agar should be stored tightly capped in the original container at 10-30°C. When stored as directed the medium will remain stable until the expiry date printed on the label.

The prepared medium may be stored for up to 2 weeks at 2-8°C.

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SKU: CM0906B Categories: Culture Media Products, Microbiology
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  • Description
  • Additional information
Description
Product CodeDescriptionProduct SizeQuantity
CM0906BR2A Agar 500g–500g
Additional information
Dimensions10 cm
Brand

Oxoid

Estimated Delivery Time

1-2 weeks

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R2A Agar 500g

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