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A total of 120 flavoured UHT milk samples (200 ml) of two flavours (strawberry and mango) from three commercial plants (Brand A, brand B and non-branded plants) 20 samples of each flavoured UHT milk carton packaged were purchased from different markets, 6 October city, Egypt in 2017 and 2018. Results showed that, the pH and acidity recorded were consistent with the Egyptian Organization for Standardization and Quality (Ecorys) Specification, 2005. Antibiotics were present in 5% of brand A mango samples and was clear in the non-branded milk being 10% and 15% in strawberry and mango milks, respectively. Formaldehyde was completely absent from all samples investigated, but hydrogen peroxide was detected in the non-branded mango and strawberry milk and valued as 20% and 5%, respectively. Microbiological results revealed that total bacterial count (TBC) was not detected from any of the branded mango and strawberry UHT milk but a ratio of 15% of the non-branded strawberry milk samples was detected. Salmonella was completely absent in branded UHT milk samples. Coliforms not detected in brand A and B samples but 5% of mango and 10% of strawberry of non-brand milk samples were contaminated with coliforms. Yeasts and moulds were only detected in the non-branded UHT flavoured milk (5% of mango and 15% of strawberry). Fat content recorded range among all samples (1.6%-1.81%) were not consistent with the Ecorys Specification, 2005 (3%). TS and SNF values were consistent with the Egyptian UHT milk Specification (≥15%) and protein values were within the accepted range.