Table 4.

The maximum allowable recovery for each membrane type and feed water (“A”: 0.384 g/L as Cl⁻, 1.02 g/L as SO₄²⁻, 0.107 g/L as Na⁺, 0.142 g/L as Mg²⁺, 0.312 g/L as Ca²⁺; “B”: 33.2 g/L as Cl⁻, 0.937 g/L as SO₄²⁻, 19.5 g/L as Na⁺, 0.990 g/L as Mg²⁺, 0.771 g/L as Ca²⁺).

	Membrane Type
	NF270 “A”	NFX “A”	NFDL “A”	NF270 “B”	NFX “B”	NFDL “B”
Maximum allowable recovery [%]	90.1	91.6	89.8	89.3	89.5	84.6