1.5 mg/L to ppm

1.5 mg/L = 1.5 ppm

1.5 mg/L = 1.5 ppm

Formula

1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm