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Reliable protection in the event of a fire – why do I need a safety storage cabinet?


90 minutes – development and timeline of a fire

In the event of a fire, the 90 minutes of tested fire protection is the decisive factor in protecting human life and minimising damage to property. DÜPERTHAL safety storage cabinets with fire resistance rating Type 90 allow sufficient time for workers to leave the room in the event of a fire and allow the fire brigade sufficient time to get into the laboratory. Just before a smaller extinguishable fire from stored flammable substances causes an uncontrollable fire. The cabinet is tested under fire conditions as standard. Each cabinet model is type-tested in a fire chamber in accordance with DIN EN 14470-1. The test parameters and test temperatures in the fire chamber and directly in the cabinet are specified in the standard, and further details are provided on the following pages.


0 min.

0 minutes, the fire starts
» The fire alarm is triggered.
» Workers begin to leave.
5-10 min.

5-10 minutes after the start of the fire
» Workers are now outside the danger zone.
» The fire brigade is on its way to the site of the fire.
10-15 min.
10-15 minutes after the start of the fire
» The fire brigade is at the source of the fire.

After 10 minutes of burn time
» Safety storage cabinets with a fire resistance of 10 minutes are now ceasing to function.
» The flammable substances are no longer safe.
» The fire brigade must fight the fire at a considerably increased risk.
» Heavy damage is to be expected.
The benefits of our 90-minute technology
» Safety storage cabinets Type 90 retain their function for 90 minutes.
» The hazardous substances are stored safely for at least 90 minutes.
» The fire brigade has considerably more time to extinguish the fire safely.
» Reduced fire load and minimised damage.


Fire resistance as per standard – how does a safety storage cabinet work?


Fire chamber test according to DIN EN 14470-1 

The fire resistance rating of safety storage cabinets in accordance with DIN EN 14470-1 is determined by the rise in temperature of the cabinet interior inside a fire chamber according to the temperature/time curve in accordance with DIN EN 1363-1. On the basis of a starting temperature of 20 +/- 5 °C and the time it takes for the temperature in the cabinet interior to reach max. 180 ° Celsius, the cabinet is then classified as Type 15, 30, 60 orG90 (same as the time in minutes). Safety storage cabinets for pressurised gas cylinders are subjected to a comparable test in accordance with DIN EN 14470-2. Details on this are provided here.



plus_red Your economic advantage

Example calculation:
(average values)
US standards
European standard
DIN EN 14470-1
Cost of purchasing a safety storage cabinet 1,000 € 2,430 €   
Tested fire resistance 10 minutes 90 minutes  
Profitability/Costs 100 € per min. 27 € per min. 


Extreme testing of the Type 90 DÜPERTHAL safety storage cabinet


plus_grey Your technical advantage

Fire and explosion-proof safety storage cabinets Type 90 by DÜPERTHAL offer a reliable fire resistance of 90 minutes in accordance with DIN EN 14470-1.


US standards according to FM/UL, NFPA 30

Maximum allowed temperature in the cabinet
in acc. with FM/UL = 163 °C (325 °F).
Temperature profile in accordance with NFPA 251 in the open fire chamber.
Example of the rising temperture in an FM/UL cabinet
during the fire test, monitored with 1 thermometer.
European standard DIN EN 14470-1

Maximum allowed temperature in the cabinet
in acc. with DIN EN 14470-1 = 200 °C (392 °F).
Temperature profile in accordance with DIN EN 1363-1 in the closed fire chamber.
Example of the rising temperature in a Type 90 cabinet
during the fire test, monitored with 11 thermometers.



Fire resistance rating Type 90 – structure of a safety storage cabinet


90 minutes of safety thanks to special design

Utmost care is essential in the handling of hazardous substances. Our technology with maximum fire resistance helps you achieve this. Thanks to their special design, our safety storage cabinets guarantee fire resistance of 90 minutes, type-tested according to DIN EN 14470-1.



» The doors and the outer carcass are made of powder-coated sheet steel.
» The inner carcass and the inside of the doors are made of high-quality decor panels.
» There is a special insulation between the inner and outer carcasses, so that the heat cannot penetrate into the cabinet interior in case of fire.
» In the event of a fire, the doors, drawers and ventilation openings for air supply and exhaust air are automatically closed and the door gaps as well as open joints are sealed by foam-forming gaskets.

Your benefits through DÜPERTHAL safety storage cabinets Type 90

» A chain reaction will be avoided in case of fire.
» Workers, the fire brigade, and rescue services will be protected.
» Maximum fire protection for buildings and systems.
» Reduction of insurance contributions for fire protection is possible.
» Financial security, e.g. by reducing the risk of default of production and buildings.
» Fulfilment of the requirements of risk management in accordance with ISO 9000 and ISO 14001.
» Use of high-quality safety storage cabinets conserves resources and strengthens the image of your company.


Test requirements according to DIN EN 14470-1/DIN EN14727 – general requirements for a safety storage cabinet


Test criteria, protection objective and minimum requirements

The three essential requirements of a safety storage cabinet in accordance with DIN EN 14470-1 are the minimisation of the risk of fire, the minimisation of fumes released into the work environment, and the retention of possible leakages. The test requirements of the laboratory furniture standard DIN EN 14727 also ensure a minimum of quality.



Extracts from DIN EN 14470-1

» To prevent an explosive atmosphere, the ventilation must be effective directly above the bottom tray.
» Ventilation openings for air supply and exhaust air must self-close when the temperature reaches 70 °C.

Interior fittings
» The bottom tray, which serves to retain potential leakage, must still be functional after the fire resistance test.
» The shelves must be made of non-absorbent material, bear the permissible load over the duration of the fire and be at most 1.75 m above the floor.

Door technology
» Complete self-locking of the doors within a maximum of 20 seconds, optionally, an arrest system with temperature release at 50 °C is possible.
» The closing force between the main closing and opposite closing edge of the door must not exceed 100 Newtons.
» Each wing of the door must be operational with one hand. 
» If the doors are lockable, the locking device must not prevent self-closing in the event of fire.

Fire chamber test
» Each cabinet model is type-tested in a fire chamber according to DIN EN 14470-2 Type 90.


Extracts from DIN EN 14727

Static endurance test
» Standing surfaces, e.g. storage shelves, are subject to a static load and impact tests and must not show any breakage or other damage.

Dynamic load test
» All components that move mechanically, such as pull-out shelves, drawers and doors, are tested with 50,000 cycles each. After the tests, the doors must close exactly and snap into place.


Tested safety at the highest level including

ift_brandverhalten IBMB

Type-testing according to DIN EN 14470-1 by recognised test institutes (TÜV Süd, iBMB Braunschweig, ift Rosenheim).


Type 90 classification in accordance with DIN EN 14470-1.
TÜV-tested according to DIN EN 14727 (laboratory furniture standard).

TuevSued CE-Zeichen

GS-/CE mark.


High Quality mark of approval for excellence in design,user-friendliness and increased lifetime.

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Approvals Underwriters Laboratories

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Australian Standard