Are Coldstream cartridges effective at filtering PFAS?
Find out if Coldstream filters out PFAS.
Blog
Coldstream FTO+ filter flushing protocol and tank cleaning
For tasteless water with no manufacturing residues, follow this...
How do you separate nested tanks during transport?
The tanks are nested for transport and can be difficult to separate.
Frequently asked questions about filtration testing and Pure Filters systems
Answers to the most common questions.
What are the differences between the Black Berkey and Coldstream FTO+ filters?
Coldstream FTO+ vs Black Berkey.
Understanding Ceramic and Activated Carbon Filtration
The importance of ceramics and activated carbon in water filters.
Why doesn't a gravity system like Pure Filters with coldstream FTO+ cartridges remove mineral salts?
This is an essential aspect of how gravity filters work.
Is it possible to use my water purifier to filter and purify water from natural sources?
See how effective Coldstream FTO+ filters are.
