Natrium selenite positive tests
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QUALITY CONTROL
Inoculate and incubate at 35 °C for 18-24 hours:
Escherichia coli ATCC 25922: weak growth, pink medium with bile inhibition
precipitate
Salmonella typhimurium ATCC 14028: good growth, colorless medium.
COMPOSITION
Peptone-caseine 5 g, Lactose 4 g, Disodic phosphate 10 g, Acid Natrium selenite 4 g,
L-cystine 0.01 g, Distilled water ad 1000ml; adjust pH to 7.0.
Heat to boiling. Do not autoclave.
DESCRIPTION
Selective medium for the Salmonella spp. isolation from foods, water, feces and pathologic materials.
Fluid Selenite Cystine Medium
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(c) Costin Stoica