Model TFC - 3012 -200 TFC - 3012 - 300 TFC - 3013 - 400 RT - 3020HF. Feed Water Temp. Feed Water Silt Density Index (SDI) 5 5. Feed Water Chlorine Tolerance < 0.1ppm < 0.1ppm. Feed Water PH Range, Continuous Operation 3 to 10 3 to 10.
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