John Brennand, National Oil Free Sales Manager, Atlas Copco
Compressed air, process filtration and cooling systems operate continuously in the background, yet their performance directly influences product integrity, environmental control and operational stability.
Pharmaceutical manufacturing places the strictest demands on these systems, because they form part of the compliance process. Compressed air is used across tablet production, fermentation, aseptic filling and packaging, frequently coming into direct or indirect contact with products. Contamination avoidance is therefore fundamental. International standards and Good Manufacturing Practice requirements shape how air systems are specified and maintained, with oil-free compressed air, stable dew points and validated process filtration forming the basis of reliable, compliant production environments.
Oil-free air where purity is essential
Where compressed air contacts medicines, packaging or critical equipment, oil-free technology is essential. Oil contamination from carryover, even at very low levels, can compromise batch quality and interrupt production.
At Farmalogica S.A. in Colombia, which develops, produces and sells pharmaceutical and surgical products, compressed air is used in the packaging of penicillin and cephalosporin products. Because compressed air can directly contaminate the final product, its quality is critical to maintaining sterile conditions. To address this, Farmalogica operates an Atlas Copco Z Class 0, certified oil-free compressor supplying air compliant with ISO 8573-1, ensuring that the air used throughout the process remains completely oil-free.
The compressed air supports critical powder dosing, capping, sealing, washing and labelling operations, where maintaining the correct pressure dew point is essential to preserve sterile conditions and prevent contamination. The company has reported a significant reduction in power consumption compared with its previous compressor, while operating on a continuous 24-hour production schedule. The integrated dryer configuration also supports compressed air quality while making efficient use of available floor space.
Efficiency alongside compliance
Energy efficiency and performance has also become a major consideration factor across pharmaceutical facilities. Utilities operate continuously, and inefficiencies will have a negative effect operating expenditure and emissions.
A biopharmaceutical manufacturer in England, producing sterile liquids, required compressed air compliant with ISO 8573-1:2010 Class 1:2:0. Ageing compressors and dryers were increasing maintenance requirements and energy use, whilst heat from the regeneration cycle was affecting filter compliance.
After a three-week monitoring period to assess actual demand, the facility replaced its legacy equipment with an Atlas Copco ZT-VSD+ oil-free variable-speed compressor and an MDG-A air-cooled rotary drum desiccant dryer. The upgrade delivered more than 120 MWh in annual energy savings and reduced associated emissions by around 22 per cent, by utilising heat from compression to regenerate the discussant media. The guaranteed Class II -40°C pressure dew point supported the stringent air purity requirements for sterile production.
Following these results, the manufacturer was so impressed, they added a second compressor and dryer so production could continue even during servicing. A five-year extended warranty service plan was also taken to cover preventive maintenance and support predictable performance.
Cooling as a controlled variable
Temperature stability is another critical factor in pharmaceutical environments. Cooling systems support temperature-sensitive processes and cleanroom climate management, where stable conditions are critical to help protect product quality and environmental control.
Process chillers are widely used to maintain these conditions. Recent developments in refrigeration technology include the use of lower Global Warming Potential refrigerants to reduce environmental impact while supporting precise temperature control. Modern industrial chillers also increasingly incorporate remote monitoring capabilities, enabling performance tracking and predictive maintenance.
Utilities as part of the quality equation
Across these examples, a consistent theme emerges. Oil-free compressed air, validated process filtration, efficient drying and controlled cooling all contribute to maintaining stable operating conditions in regulated environments.
As pharmaceutical production becomes more complex and regulatory expectations remain high, attention is shifting toward system-level performance. Data-led assessment, appropriate equipment specification and planned maintenance all support reliable operation. In an industry where product integrity is paramount, the performance of these hidden utilities is closely linked to production confidence.
