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A comment on Microbiologist Investigates After Her Beef Soup Turned Blue in the Fridge. Parent comment

Re:Microbiologist Investigates After Her Beef Soup Turned Bl... by cma on Friday March 10, 2023 @05:22PM (#35102051)
Wikihow: How to Make an Indicator for Acids and Bases Using Hibiscus Petals

https://www.wikihow.com/Make-an-Indicator-Using-Hibiscus-Pet...

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