GC column, Nonpolar–low polar, OPTIMA 5, 50 m L, 0.32 mm ID, 0.25 µm df Gradation - Sulfate - < 200 • > 400 • > 800 • > 1200 • > 1600 mg/L SO₄²⁻ 100ug/mL BORON 125mL
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