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My dipslide surface turned red or pink almost immediately. Do I have lots of bacteria?

April 26, 2017bacteria dipslide immediately lots pink red turned

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My dipslide surface turned red or pink almost immediately. Do I have lots of bacteria?

1 Answer

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No, this is most likely a chemical reaction. The dye that is added to the media on the dipslide in order to color the colonies red, reacts when the sugar in the media is broken down. This reaction may be caused by bacteria or even by certain chemicals. If the color change is due to a chemical reaction, it should happen within the first 15-30 minutes. Also, no colonies would be visible on the dipslide surface within that time period.