50 ppb to ppm

50 ppb = 0.05 ppm

ppbppm
35 ppb0.035
40 ppb0.04
45 ppb0.045
500.05
55 ppb0.055
60 ppb0.06
65 ppb0.065

50 ppb = 0.05 ppm

Formula

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