Red Dye (single bottle)

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Special Items

Red Dye (single bottle)

  • $3.00
Product Description

Red Dye : reds FD&C 40 and/or 3 for testing the Black Berkey Filter elements only.
The test only works with this artificial red dye, and the filters are designed to remove this out.  

-add 5-10drops of dye to upper chamber and fill up full.
-if any dye is seen in the filtered water
-check if there is any leakage, if there is, tighten or readjust.
-if the dye is flowing through the filter outlet, then the filter is defective or exhausted.


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Please purchase first before review