Tezgen HPX 355 ATEX Laboratory Deep Freezer (355 Litre Ex-Proof Cooling)

Tezgen HPX 355 ATEX Laboratory Deep Freezer is a compact ex-proof freezer solution developed for the safe conditioning of flammable, combustible and volatile chemicals with a high explosion risk and of sensitive reagents.

With an operating temperature range of -12 °C to -24 °C, the Tezgen HPX 355 provides a high level of operational safety in laboratories and industrial facilities thanks to its spark-free inner cabinet design compliant with the ATEX Directive 2014/34/EU.

Tezgen HPX 355 – key features and advantages

ATEX 2014/34/EU certification standards: inner cabinet architecture that generates no sparks or static electricity, providing a 100% safe environment for volatile solvents and chemicals.
Precise temperature control: stable freezing capacity between -12 °C and -24 °C and a microprocessor-controlled digital display panel.
Audible and visual alarm safety: instant audible and visual warning when the lower or upper temperature limits are exceeded, the door is open or a sensor fails.
Static electricity and arc protection: unlike standard freezers, the inner cabinet contains no thermostat, fan switch or lamp components that could cause electrical sparks.
User-friendly design: 307 litre net volume, 5 deep-freezer shelves, integrated door lock and manual defrost.
Optional data logger: optional integration of temperature monitoring and data recording equipment.

Tezgen HPX 355 Deep Freezer – Technical Specifications

Technical parameter	Feature / value
Brand / model	Tezgen / HPX 355 Deep Freezer
Product type	ATEX-certified laboratory deep freezer
Operating temperature range	-12 °C … -24 °C
Gross / net internal volume	355 litres / 307 litres
External dimensions (W x D x H)	600 x 700 x 1865 mm
Internal dimensions (W x D x H)	440 x 500 x 1690 mm
Number of trays / shelves / baskets	5 deep-freezer shelves
Control panel / display	Digital display controller
Open-door alarm	Yes (audible and visual)
Temperature alarm	Yes (minimum and maximum, audible/visual)
Sensor failure alarm	Yes
Data logger	Optional integration
Safety & security	Integrated door lock, anti-static spark-free inner cabinet
Cooling technology / defrost	Compressor cooling / manual defrost
Refrigerant	R290
Maximum power consumption / voltage	320 W / 220–240 V, 50 Hz
Energy consumption / noise level	3.56 kWh/24 h
Net weight	97 kg
Standards & directives	ATEX Directive 2014/34/EU

Areas of use of ATEX deep freezers

Chemical and petrochemical plants: safe frozen storage of volatile and flammable solvents (acetone, hexane, methanol, etc.), reactive chemicals and organic peroxides.
Pharmaceutical and drug industry: storage of active pharmaceutical ingredients (API), active substances, vaccines, sera and biological reagents in explosive atmosphere (Zone 1 / Zone 2) areas.
University and research laboratories: conditioning of volatile organic compounds (VOC) used in chemistry, biochemistry and materials engineering research.
Biotechnology and healthcare facilities: safe preservation of pathology/histology samples containing xylene, formalin and alcohol-based solutions.
Industrial testing and paint/varnish industry: storage of paint, resin, adhesive and fuel analysis samples in test laboratories.

How do ATEX freezers differ from standard deep freezers?

Internal volume safety: the cabinet contains no components that could cause an electrical spark (thermostat contact, light switch, etc.).
Static electricity protection: the body, shelves and inner lining are made of conductive or anti-static materials that prevent static build-up.
Prevention of overheating and pressure: the compressor and external unit components are integrated into explosion-proof (Ex-proof) enclosures.