spectapure DI Resin

[swissgaurd]

i was looking at my DI resin from spectrapure and was wondering should i wait till its completly black right now its 3/4 black and 1/4 gold

should i change it

thanks

vic

 

[Ace25]

You change it when you see TDS showing up on a meter. You can't go by the looks of it because it will become all used up before all the color changes.

 

[swissgaurd]

You change it when you see TDS showing up on a meter. You can't go by the looks of it because it will become all used up before all the color changes.

thanks
i am showing a 2ppm so out she goes


vic