Mantis DI cartridge Original part of the Mantis RO-DI V-2 osmosis unit

Mantis carbon prefilter Standard 10" prefilter, original part of the Mantis RO-DI V-2 osmosis unit

Mantis membrane 100GPD Standard membrane, original part of the Mantis RO-DI V-2 osmosis unit

Inline TDS meter A TDS Meter measures the amount of Total Dissolved Solids (TDS) in a solution. Since dissolved ionized solids like salts and minerals contribute to the conductivity of a solution, a TDS meter measures the conductivity of the solution which is then converted to a TDS reading.