MOSTAFA E. EISSA and AHMED S. NOUBY Quality Control Department, HIKMA Pharma Pharmaceutical Company, Nasr City, Egypt *Corresponding author: M. E. Eissa, HIKMA Pharma Pharmaceutical Company, Nasr City, Egypt; e-mail: mostafaessameissa@yahoo.com Submitted 9 September 2014, revised 16 September 2015, accepted 8 October 2015 DOI: 10.5604/17331331.1197271 Abstract Neutr...