• Fully Comprehensive Air Hygiene Surveys
• Various Types of Air Sampling and Testing
• Full Refurbishment including Cleaning of Air Handling Units, Ductwork, Grills and Diffusers etc.
• Disinfection of all Systems using an FDA Approved Biocide
• Updating of Existing Drawings
• Record keeping Systems (LEVs)
• Commissioning and Balancing of Systems
• Ongoing Monitoring and Testing Programmes
• Manufacture and Design of Specialised Air Sampling Equipment

• Water temperatures are between 20-45°C
• Presence of nutrients, such as rust, sludge, scale, sediment and algae
• Stagnant water (e.g. if a tap is not regularly used)

• Dead legs - obsolete pipework where water can stagnate
• Hemp joints where bacteria can multiply
• Flexible hoses manufactured with EPDM which can encourage Legionella bacteria to grow
• Inspection of major assets such as water systems, cold storage tanks, calorifiers (hot water heaters) and cooling towers

• The NHS requires that every Operating Theatre must be Validated for Air Quality, Ventilation and Air Conditioning, etc, so that the environment for surgery is safe. Validation of systems to be done as per HTM03-1 and ISO 14664 standard, (ISO 14644-1 covers the classification of air cleanliness in cleanrooms and associated controlled environments. Classification in accordance with this standard is specified and accomplished exclusively in terms of concentration of airborne particulates).
• Temperature and Humidity check
• Air particulate count
• Air Change Rate Calculation
• Air velocity at outlet of terminal filtration unit /filters
• Pressure Differential levels of the Operating Theatres with respect to adjoining areas
• Validation of HEPA Filters by appropriate tests like DOP (Dispersed Oil Particulate)/PAO (Poly Alpha Olefin), etc.

The principle reason for testing are:

• Clinical Safety and the preservation of life is achieved by make sure that all risk of infection is removed by proper cleaning of the air in the room and proper preparation of all surfaces.
• Ensuring all external factors that could interfere with an operation are removed giving reassurance to the surgeon that there will be no unwanted and unforeseen complications during the process.
• Removing the risks to the business and the businesses reputation by a patient claim due to reduced focus on Clinical Safety, low standards and bad practise causing harm to the patient.

• ”The Health and Safety at Work etc Act 1974, lays down that employers of persons concerned with the premises owe the “common duty of care” both to employees and others who may use or visit the premises. Part 1 indicates that the condition of premises or any part of them shall be treated as a risk attributable to the manner of conducting an undertaking.
  'The Occupiers’ Liability Act 1984 imposes a duty of care on an occupier of premises to prevent risk to others of injury, which includes any disease and impairment of physical or mental condition. The European Communities ‘Workplace Directive’ is implemented in the United Kingdom by the ‘Workplace’ (Health, Safety and Welfare) Regulations 1992. The Health and Safety Commission’s Approved Code of Practice and Guidance L24, HMSO 1992 states that new “Mechanical Ventilation Systems (including air condition systems) should be regularly and properly cleaned, tested and maintained to ensure that they are kept clean and free from anything which may contaminate the air’. This will apply to all existing workplaces from 1 January 1996. Additionally, provision for access space for maintenance of the ventilation systems is expected to be introduced in building control legislation and will need to be considered at the design stage” >