Dr Meter TDS Meter with LCD Display.  TDS meters measure Total Dissolved Solids in water.

Features:

• Shows the TDS value instantly after being immersed into liquid
• Hold Function: Freeze the measurement to view it out of the water.
• Auto-off function: the meter shuts off automatically after 6 minutes of non-use to conserve batteries.
• Includes a TDS chart in the user manual that explains TDS values

TDS meters can are helpful for brewing if you’re using a RO filter or if you purchase RO (reverse osmosis) or DI water for brewing.  If you’re using and RO filter a TDS meter tells you how effective your filter is and can help you know if your filters need to be replaced.  If you buy water, a TDS meter can let you know what you’re getting as some water processors add minerals back for flavor.  A TDS meter will allow you to make sure you’re getting what you want.

RO and DI water can be built up to reflect the exact water profile you’re looking for.  See: Water by John Palmer and Colin Kaminski

Update: Since this post was published the price, availability or promotion has changed.  Check the product page for current description, price and availability.  Also: Today’s Deals on Amazon

TDS Meter, Dr.meter TDS-3C Water Quality TDS Tester 0-9990 ppm Range 1 ppm Resolution +/- 2% Accuracy

Also: Portable Universal 5-stage Reverse Osmosis RO Purification Water System with DI Deionizing Mixed Bed 0PPM postfilter, made in USA – [Review]

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