5.5 ppm to ppb

5.5 ppm = 5,500 ppb

ppmppb
2.5 ppm2,500
3.5 ppm3,500
4.5 ppm4,500
5.55,500
6.5 ppm6,500
7.5 ppm7,500
8.5 ppm8,500

5.5 ppm = 5,500 ppb

Formula

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