XLD, Petri Dish Type (CAT#: STEM-CC-4299-LC)

Xylose Lysine Deoxycholate (XLD) agar is a selective differential medium specifically designed for isolating and distinguishing enteric pathogens, particularly Salmonella and Shigella species. Salmonella colonies develop characteristic black centers due to hydrogen sulfide (H₂S) production, while Shigella colonies, being H₂S-negative, appear colorless.

Composition
Xylose: 3.5g/L
L-Lysine: 5.0g/L
Lactose: 7.5g/L
Saccharose: 7.5g/L
Sodium Chloride: 5.0g/L
Yeast Extract: 3.0g/L
Phenol Red: 0.08g/L
Sodium Deoxycholate: 2.5g/L
Ferric Ammonium Citrate: 0.8g/L
Sodium Thiosulfate: 6.8g/L
Agar: 13.5g/L
Type: Petri Dish
Package: 50