• Angolul

Special cleaning and measurements

The technologies applied as complementary services to our basic activities, such as special measurements and cleaning, are available in the form of separate services as well.

Air measurements

Indoor air control

  • Air quality sampling


    Inspection is made up of two parts: 1) measuring bacteria, legionella, and mold levels in the duct and in the air of the office 2) measuring the amount and concentration of dust that has settled in the duct

    Measuring category one

    Bacteria, legionella, mold We measure bacteria, legionella, and mold with MAS-100 and MWY-CYE agarra 100 microbial air monitoring systems. The samples are stored and then analysed in a 37°C normal atmosphere during the first day and later for five days at regular room temperature.

    Level limits

    The National Environment and Health Institute sets the following levels for indoor bacteria levels: under 50 = acceptable, 50-100 = high, above 100 = extremely high. The need for cleaning can be determined based on laboratory results. It is important to note that based on experience, the more the hours of operation, the less favourable the measured numbers will be, which results in a higher risk of respiratory illness.

    Measuring category 2 Dust concentration

    Measurement is done by taking a sample using a special adhesive material of a specific size and opening of the appropriate duct. Using a special, certified scale, the material is weighed before and after taking the sample. The difference between the two values is then converted to g/m2.

    Level limits

    Dust concentration level limits are determined using the EU-VDI 6022 German standard. According to this standard, the settled dust in the air duct cannot surpass the 3 g/m2 value. If the value exceeds this level, the dust concentration can be considered too high, and should be removed using proper cleaning techniques.

  • Dry ice cleaning

    Dry Ice Cleaning

    Keeping fans, caloriferes, and heat-recycling systems clean significantly increases their life-span, effectiveness, and energy-efficiency. Inspection: We inspect the number of fans, caloriferes, and heat-recycling system’s m2 that need to be cleaned.

    Cleaning process

    With the dry-ice method, we spray dry-ice granulate throughout the duct using variable highpressure air. The quantity and pressure can be set such that it protects even the most delicate of surfaces, while still providing an effective way to remove even the most stubborn pollutants. The -80 degree C dry-ice granulate gives the grease pollutants a “cold shock”, which thus contract and fall off due to the evaporating gas. The dry-ice heats up and evaporates completely while the pollutants are now loose and easily removed. After cleaning, the surface is completely dry, and does not require any additional handling. The evaporating carbon dioxide has no negative environmental effects. Following the cleaning process, the systems are once again capable of performing at the efficiency and capacity for which they were originally designed.

    Work documentation

    Photos (and videos upon request) will be given to our Customers on CD documenting the original state and the resulting state of the ventilation system.

Graffiti removal

Coat application & surface treatments