Salmonella Shigella Agar
Also known as：SS Agar
- Category
- Dehydrated Culture Media
- Dissolve per litre
- 63.03 g
- Pack sizes
- 500 g · 5 kg · 25 kg
- Certifications
- Halal
- Standard methods
- FDA BAM
Data updated：2026-11-06
Brand cross-reference：BD Difco SS Agar · Oxoid Salmonella Shigella Agar · Merck SS Agar（FDA BAM） Brand cross-reference
- Allergens
- Milk, Soy
Overview
Salmonella Shigella Agar (SS Agar) is a moderately selective medium for isolating Salmonella and Shigella. Bile salts, citrate and brilliant green suppress Gram-positive organisms and most coliforms; thiosulfate with ferric citrate gives hydrogen-sulfide-producing Salmonella black-centred colonies, while lactose fermenters appear red. Used for plating food and clinical samples after pre-enrichment and selective enrichment.
How selective media fit into the testing workflow
Pathogen testing normally runs in three stages: a pre-enrichment medium such as Buffered Peptone Water repairs injured cells and raises numbers, a selective enrichment then suppresses competing flora, and finally a selective differential agar isolates the target colonies. Selective agents are typically bile salts, dyes, or antibiotics; differential agents make target colonies develop a characteristic colour or morphology. Choose the combination specified by the method you follow.
Product highlights
- Halal certified, suitable for the Malaysian, Indonesian, and Middle Eastern markets
- Manufactured to the standard formulation, 63.03 g per litre
- Available in 500 g / 5 kg / 25 kg, from laboratory to industrial scale
- COA, specification sheet, and technical data sheet available; samples on request
- Manufactured in Taiwan with reliable supply
Frequently asked questions
01Can selective media be autoclaved?
Not always. Some media containing dyes or selective inhibitors lose their selectivity if overheated and should only be heated until fully dissolved, without autoclaving. Follow the preparation instructions for this product, and contact us if you are unsure.
02How much powder per litre?
Use 63.03 g per litre of deionised water; preparation and sterilisation conditions are given on the specification sheet.
03What are the equivalent brand products and standard methods?
Cross-reference: BD Difco SS Agar, Oxoid Salmonella Shigella Agar, Merck SS Agar. Standard methods: FDA BAM. Formulations may differ slightly between makers; refer to the specification sheet.
04How do I request a bulk quotation, and can you provide a COA?
Yes. This product is available in 500 g, 5 kg, 25 kg. Tell us your application and volume when requesting a quotation; we reply within one working day and can supply the COA, specification sheet, and technical data sheet.