Mannitol Salt Agar Plates/W Streptomycin Sulfate
Catalog.No: DCP-MSAPSS
Features:
Uses: Selective & presumptive identification of Staphlyococcus aureus from clinical, food, cosmetic, and environmental samples
pH: 7.4 ± 0.2
Size: 100 mm
Concentration: 50 µg/mL
Storage: Keep away from light at 4°C
Shipping Condition: Blue ice
Apeearance: red to pink-red, clear to slightly opalescent
Sterile
Shelf life: 4 weeks
*All agar plates are manufactured with ultrapure water, deionized and demineralized to minimize ionic and organic contaminants. The premium ISO certified agar solution is sterilized by a full cycle of autoclaving. Each 100mm plate has 20mL of agar medium in premium plastic dish.
Description:
Mannitol salt agar (MSA) with streptomycin sulfate is a modified form of standard MSA in which an aminoglycoside antibiotic is added to increase the suppression of streptomycin-susceptible background bacteria, while retaining the usual selectivity for salt-tolerant staphylococci and the mannitol/phenol-red differentiation system. MSA contains peptones and beef extract, which provide nitrogen, amino acids, vitamins, minerals and other growth factors needed for bacterial growth, NaCl creates high-salt conditions and most bacteria are unable to grow under these conditions. D-mannitol is a fermentable carbohydrate in the medium, and phenol red is the pH indicator with the medium appearing red at neutral to alkaline pH and turns yellow when acid is produced from the mannitol fermentation.
Streptomycin is an aminoglycoside antibiotic that binds to the 30S ribosomal subunit in susceptible bacteria, causing misreading of mRNA, inhibition of protein synthesis, and eventual cell death. Streptomycin is active against aerobic Gram-negative rods and some Gram-positive bacteria. The combination of MSA and Streptomycin sulfate introduces an additional antibiotic selection layer, preferentially inhibiting streptomycin-susceptible organisms, that might otherwise still grow under high-salt conditions.
* This product is manufactured under ISO 13485-certified and CE-approved facilities (Suppliers of DiagnoCine Precision). All final packaging, quality assurance, and testing are done at the DiagnoCine R&D and Quality Testing Center. All specific customization requests and assembly were accomplished at DiagnoCine Precision in Totowa, New Jersey, USA
