Colour Yellow-orange to yellow-brown Meets Odour weak to none Meets Particle structure fine spray-dried granules Meets Identification Positive Meets Particle size 60 U.S mesh Meets Residue on Ignition Max.5% 3% Humidity Max.3.0% 1.5% Content(Activity) Min.80.0% (by HPLC Method) 80.4% Riboflavin Vitamin B2 GMP CERTIFICATE, DMF OPEN PART 98% BP2007/USP30; FCCIV Competitive price