• Slider - Ventilation systems


Safety storage cabinets complying with DIN EN 14470, must be fitted with supply and exhaust air connections to allow the use of an industrial exhaust air system that prevents hazardous vapours escaping into the working space. The ventilation must be routed o the open air in a safe location. Alternatively, ATEX-compliant (2014/34 / EU) recirculating air filter systems have been tried and tested in practice for safety storage cabinets for solvents. In accordance with TRGS 510, safety storage cabinets without industrial ventilation must be earthed due to the increased hazard potential.


  • Preventing an explosive atmosphere: Above a 10-fold air exchange per hour, a concentration dilution can be achieved in the safety storage cabinet, thus preventing an ex-zone around the cabinet. Please note that something as simple as a laboratory bottle that has been opened once may be a permanent source of emissions.
  • Minimisation of health risks: Industrial ventilation can be used to counteract an increased risk of explosion and unpleasant odours. In practice, it may be necessary to set a higher air exchange.
  • Effectiveness/functionality: The ventilation must be effective directly above the bottom tray, as solvent vapours are often heavier than air. The laboratory directive also requires that the extraction is applied directly at the point of danger. Therefore, all DÜPERTHAL safety storage cabinets are equipped with ventilation at each cabinet level.
  • To guarantee maximum safety for your employees, connection to industrial exhaust systems is essential for many chemicals. DÜPERTHAL offers a variety of solutions to stop harmful vapours escaping into the working area. All ventilators and components comply with Directive 2014/34/EU (ATEX) and thus meet the highest safety standards.

Room ventilation systems in accordance with DIN 1946-7
Safety storage cabinets are exhaust air treatment facilities when they are operated with outgoing air or recirculating air. Exhaust systems should be planned, set up and operated in such a way that no hazard can arise due to a dangerous explosive atmosphere. Released gases, vapours and aerosols must be removed and diluted so that there are no health risks due to inhalation. Only continuous monitoring of the ventilation allows the operator to take appropriate technical and organisational measures to prevent hazards in the event of a failure of the ventilation. The design of the systems must ensure that the sound pressure level in the room does not exceed 52 dB(A).

You advantage with technical ventilation

ATEX Directive 2014/34/EU
Attaching a ventilator to a safety storage cabinet for flammable liquids or flammable gases represents “combined equipment”. In accordance with the German Industrial Safety Regulation (BetrSichV), ventilators must meet the requirements of Directive 2014/34/EU (valid since 20 April 2016, previously 94/9/EC) as they are classed as equipment in Zone 2 potentially explosive areas.

Flammable and aggressive vapours
Due to the large number of flammable and aggressive vapours, it is not possible to issue a blanket statement on the resistance of the exhaust air systems and ventilators. We recommend the following: Make sure the ventilator material will not be attacked by the vapours of the stored media - the manufacturer or the EC material safety data sheet of the liquid can help in determining this.

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