The report of the seized samples, which was received by the Food and Drug Administration [FDA] department earlier this week, has revealed presence of detergents.
Western UP has emerged as a major centre of synthetic milk.
"The department had raided a dairy in Gopi village under Akrabad Police station in May and had seized chemicals worth about Rs three lakh," FDA officer in-charge Chandan Pandey said.
"Two persons including the dairy owner were detained and the milk samples were sent to laboratories for detailed tests," he said.
Based on the report, a fresh case would be filed against the two persons, that could lead up to five years of imprisonment, besides a maximum penalty of Rs 10 lakhs.
Western UP has emerged as a major centre of synthetic milk in recent years and a major drive against producers of such synthetic milk is on, he added.