Pap Légtechnika Kft.

Inspection Procedures

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. If the inspection results in values which surpass level limits, then one should also consider the following:


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