Ensure your BOROUX Foundation filters are installed correctly with this easy, reliable test.

The BOROUX Red Dye Solution is designed to help you verify proper filter installation by visually confirming a correct seal between the upper and lower chambers. Premix the red dye in a pitcher with water and add it in your upper chamber and observe the results making sure that there is no red or pink tinted water coming into the lower chamber.  

This 4-pack of vials is perfect for initial setup, routine checks, or troubleshooting to make sure your system is performing exactly as intended.