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Zhongtai Brand PVC RESIN SG-5
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Ultrafine nanometer barium sulfate with high oil absorption and high whiteness 8000 mesh
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800 mesh high-quality calcium carbonate powder imported from Vietnam
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Titanium Dioxide Food Grade
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Paste PVC resin PB 1156
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Food Additive Caustic Soda Pearls
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Tianjin Dagu Polyvinly chloride PVC 1000s
Q
what are the two dyes in emb
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The two dyes used in EMB (Eosin Methylene Blue) agar, a selective and differential culture medium, are eosin Y and methylene blue. This combination selectively inhibits the growth of Gram-positive bacteria, allowing Gram-negative bacteria to grow. EMB agar distinguishes lactose fermenters, which produce acid and thus, under acidic conditions, the dyes precipitate onto the colonies. Lactose-fermenting bacteria appear purple-black or with a metallic green sheen (notably E. coli), while non-lactose fermenters remain colorless or take on the medium's color. This medium is especially useful in the identification and differentiation of enteric bacteria in clinical and environmental samples.
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