TDS Tester/Meter

What is a TDS tester/meter?

A TDS meter indicates the total dissolved solids (TDS) of a solution, i.e. the concentration of dissolved solid particles. Dissolved ionized solids, such as salts and minerals, increase the electrical conductivity (EC) of a solution. Because it is a volume measure of ionized solids, EC can be used to estimate TDS.

TDS Tester (POP UPS)
  • TDS Tester is The Only Way To Know If Your Reverse Osmosis Membrane Is Performing Correctly
  • A Must Have For All RO System Owners
  • Compare Incoming Feed Water To Treated Water
What are Total Dissolved Solids?
  1. “Dissolved solids” refer to any minerals, salts, metals, cations or anions dissolved in water. This includes anything present in water other than the pure water (H20) molecule and suspended solids. (Suspended solids are any particles/substances that are neither dissolved nor settled in the water, such as wood pulp.)
  2. In general, the total dissolved solids concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water.
  3. Parts per Million (ppm) is the weight-to-weight ratio of any ion to water.
  4. Conductivity is usually about 100 times the total cations or anions expressed as equivalents. Total dissolved solids (TDS) in ppm usually ranges from 0.5 to 1.0 times the electrical conductivity.
Why should you constantly measure the TDS level in your water?
Taste/Health

High TDS results in undesirable taste which could be salty, bitter, or metallic. It could also indicate the presence of toxic minerals. The EPA’s recommended maximum of TDS in water is 500mg/L (500ppm).
Filter performance

Test your water to make sure the filter system has a high rejection rate and know when to change your filter (or membrane) cartridges.
Hardness

High TDS indicates Hard water, which causes scale buildup in pipes and valves, inhibiting performance.

Pools and Spas

TDS levels must be monitored to prevent maintenance problems.
Commercial/Industrial

High TDS levels could impede the functions of certain applications.

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