First Rosin Production Facility in Spain Raided in Arona


A laboratory in the municipality of Arona, claimed to be Spain’s first facility to produce a new narcotic substance called ‘rosin’, has been dismantled by the National Police. Rosin is an ultra-concentrated derivative of hashish, which, after undergoing various filtration, freezing, and drying processes – followed by pressing and purification – transforms into a highly pure substance known as ‘rosin’ or ‘rosin hash’.

The operation led to the arrest of five individuals, including the main suspect who was caught inside the laboratory while processing the drug, and those responsible for several cannabis clubs operating in the Tenerife municipalities of Arona and Adeje.

During the search, authorities confiscated 1.7 kilos of ‘rosin’, 167 cans of resin of the same substance, 54 kilos of marijuana, 145 plants, and 2 kilos of hashish.

Additionally, the police seized the machinery used in the laboratory and 15,000 euros in cash, as detailed in a statement by the National Police.

The investigation was initiated based on information received through the official email account of the National Police, [email protected].

The alerts pointed towards a citizen of Italian nationality allegedly involved in producing a new narcotic substance within a clandestine laboratory located in a basement in Arona.

Initial investigations revealed the frequent comings and goings of the 29-year-old prime suspect near the suspected laboratory location.

It was also observed that he regularly visited various cannabis clubs in the Tenerife municipalities of Arona and Adeje.

Subsequent police actions revealed an increased influx of people entering the premises shortly after the suspect’s departure, suggesting the sale of ‘rosin’, a newly created narcotic substance presented in glass jars, was taking place there.

The dismantled laboratory employed the ‘bubble hash’ method to extract the narcotic.

Utilization of 75 kilos of marijuana buds

The ‘rosin’ was produced using a technique that required around 75 kilos of marijuana buds for each kilo of the substance. The extraction process involved using the plant while still wet, eliminating the need for drying.

The fresh buds were combined with ice and water in a bucket to detach and filter the trichome heads. Further sieving was performed to extract different types of ‘rosin’.

The filtered substances were then collected, frozen, and processed into a paste of varying colors depending on the drug’s quality.

The frozen paste was freeze-dried to remove water, resulting in ‘rosin’, a high-quality hashish derivative, ready for the final step of making ‘rosin hash’ through a pressing process.

Furthermore, the prime suspect utilized a temperature-controlled machine, indicating extensive knowledge in managing temperatures, crucial for ensuring the purity and final quality of the product.

The substance was stored in glass bottles under cold conditions to preserve its state and maintain THC levels.

The individuals were arrested in October, with the main suspect remanded in custody, and the laboratory completely dismantled.

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