DI high silicate Cartridges

[Chrisz]

How do I tell if my Hi-s DI cartridge is used up? I don’t see anything that says what color the materials turn when they’re exhausted. This is kent marine cartridge (far right), TDS still reads 0 going out, water coming in is 006

 

[Quietman]

There are silicate test kits. I periodically check output using Salifert. Maybe once every 3-6 months. Check for chlorine at same time. Even with 0 TDD. Never had Si issue though and don't use that cartridge.

 

[KStatefan]

What are you use to read TDS down to .006? If the water going in the DI cartridge is that low it should last a long time.

 

[Chrisz]

What are you use to read TDS down to .006? If the water going in the DI cartridge is that low it should last a long time.

Sorry typo 006 read out on the meter

 

[Chrisz]

There are silicate test kits. I periodically check output using Salifert. Maybe once every 3-6 months. Check for chlorine at same time. Even with 0 TDD. Never had Si issue though and don't use that cartridge.

Got well water so no chlorine to worry about