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Home Forums Technical Discussion Seeking Berkey water filter users in UK

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    Hi all

    I’ve just bought a Berkey Imperial water filter unit.  One of the reasons for choosing it is the ability to test the effectiveness of the filters by adding artificial red food colouring to the water.  This would be filtered if the unit functions correctly.  However, it seems that artificial food colouring is not available in the UK/EU.  Does anyone have an online supplier?  It must be red, artificial, not gel based and with no glucose, sugars or thickening agents.


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