Know what's in your water.
Pure is a pocket-sized digital TDS meter that measures total dissolved solids and temperature — handy for checking filter jugs, kettles, aquariums and hydroponics.
TDS + temperature
Is your filter actually working?
Filter doubts
When did you last change it?
Hard water
Scale in your kettle.
Aquarium care
Keeping fish water right.
Guesswork
No way to check at home.
Dip. Read. Know.
Remove the cap, dip Pure into a glass of water and read the TDS value on the screen. Compare tap and filtered water to see whether your filter needs changing.
A simple check for everyday water.
TDS Reading
total dissolved solids
Temperature
°C reading
Hold Button
freeze the reading
Pocket-Sized
easy to store
Auto-Off
saves battery
Many Uses
filters, kettles, aquariums
Ready in three steps.
Uncap
Remove the protective cap.
Dip
Dip into a glass of water.
Read
Read the TDS value.
Why Pure over guesswork
Questions, answered
14-Day Returns
Changed your mind? Return it within 14 days of delivery.
Secure Checkout
Encrypted payment with every major method accepted.
Tracked Delivery
Every order ships with tracking to your door.
Real Support
Questions about your order? Email us and we'll help.
Peace of mind in a glass.
Add to basket — £9.99
