Formaldehyde: An overview Treatment of Verrucae Matt Dilnot Conversions 1 ppm = 1.25 mg/m3 1 mg/m3 = 0.8 ppm (at 20 °C and 1013 hPa) 1 ppb (v/v) = 1.23 mg/m3 1 µg ...
0
Embed
Share
Upload