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Jelena B. is a dedicated quality engineer at The Quartz Corp since November 2022, bringing extensive experience in standardization from previous roles. As a senior standardization manager at the Institute for Standardization of Serbia from June 2018 to November 2022, Jelena managed various national technical committees focusing on petroleum fuels, lubricants, natural gas, bitumen, and personal protective equipment, among others. Prior to this, Jelena served as a junior adviser at the same institute from June 2013 to June 2018, specializing in standardization for natural gas, petroleum products, and rubber. Educational qualifications include a Master of Science in Analytical Chemistry and a Bachelor of Science in the same field from the Faculty of Chemistry, Belgrade, along with a degree in Pharmaceutical Technology from the School of Pharmacy and Physiotherapy, Belgrade.