![Freshwater Salt System Cartridges Freshwater Salt System Cartridges](https://cdn11.bigcommerce.com/s-50o59f71t9/images/stencil/300x300/products/210/956/saltwater__96087.1642286667.jpg?c=1)
Freshwater salt test strips will help you test the levels of salt for your freshwater system to ensure its sanitizing properly. Just dip the strip, swirl 3 times, remove with pads face up, and compare against the bottle. It will provide accurate results in under 5 seconds.