Citric acid naturally occurs in citrus fruit and is used in food as a preservative so it's not going to hurt you.
Well no.
Which is why I buy the food grade stuff.
I like my tea / coffee to taste like tea / coffee though, and less like batteries.
@NotThamesWater started
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Citric acid naturally occurs in citrus fruit and is used in food as a preservative so it's not going to hurt you.