Fume Hoods And Ventilation System

Laboratory fume hoods or fume cupboards represent the primary line of defense for personnel against exposure to harmful, toxic and dangerous fumes or chemicals as they are produced. Fume hoods are essentially aerodynamic scavenging devices that remove dangerous fumes from a laboratory and expel it into the environment where it is sufficiently diluted to no longer pose a health risk.
HERAIS fume hoods provide the highest levels of safety for laboratory personnel. Fume hoods when sized with an appropriate chemical resistant centrifugal exhaust fan will protect laboratory staff from exposure to harmful fumes.
Fume Hoods Standard sizes: 1200/ 1500/ 1800/ 2400 mm W (Walk in) X 900 mm D X 2380 mm H HERAIS has wide range of the Fume Hoods as the following:
General Purpose Fume Hood HE-FH, Per-chloric Acid Fume Hood HEPCH-FC, Radioisotope Fume Hood HEIX-FH, Stainless Steel HERAIS HESS-FH, Walk In Fume Hood HERAIS HEWI-FH, PP Fume Hood HEPP-FH, Ductless Fume Hood FH-C, Mobile Extraction Hood MFE-1, Ceiling / Wall Extraction Hoods EXH

HERAIS HE-FH General Purpose Fume Hood is the most versatile fume hood available. While packed with features, performance and convenience are the key values within this Fume Hood series. Therefore, this model is suitable for various daily applications. In addition, thi model are tested against the ASHRAE 110 (Method of Testing Performance of Laboratory Fume Hoods) standards. The ASHRAE 110 standard is one of the latest and most comprehensive methods for testing operator safety level of fume hoods. In order to do that, this HERAIS (HE-FH) series goes through tests qualitatively and repeat-ably to see how well the fume hoods contain the gases and vapors released in the work zone.

HERAIS HEPCH-FC Perchloric acid is a clear substance that is a mineral acid. It’s chemical formula is HCI04 and it is made up of between 50% - 72% acid. It has no smell, is completely clear with no colour and is liquid when kept at room temperature.  However, it does pose some serious hazards including being corrosive to metals as well being harmful to skin and eyes. It provides a violent reaction when introduced to materials including wood, oil and plastic and requires a dum cupboard that has been for use with Perchloric acid to ensure that the oxidisers are unable to accumulate. Specifically designed fume hoods are an essential purchase when you want to use this particular chemical. The main reason for this is so that the acid doesn’t come into contact with materials that could corrode or explode, causing damage to the work area and danger to anyone in the vicinity. HERAIS HEPCH-FC wash-down fume cabinets work to stop Perchloric salts from inadvertently forming which is important as the salts are highly sensitive and can explode when exposed to even the smallest vibration. However, before a unit can be used, the operator must be clear on the required procedure to ensure proper use.

HERAIS HEIX-FH Radioisotope Fume Hoods are made to offer the highest level of personnel and environment protection from radio-chemical applications in laboratories. It ensures the quick and effective removal of all hazardous radioactive fumes from spillages, handling or storing from the work chamber.
Features
Stainless steel 316 linear as standard.
Effortless sash movement with chain and sprocket sash system.
Seamless linear construction for easy cleaning and maintenance.
Fully integrated Stainless-Steel worktop with optional welded sink.
Reinforced work surface to withstand heavy loads.
Filtration system included.

HERAIS HESS-FH Full Stainless-Steel Fume Hoods are designed to contain and exhaust toxic, obnoxious or otherwise harmful gases, vapors, mist etc. to protect personnel and equipment.
A motor driven blower creates Negative Pressure within the chamber, extracting the contamination air from work area and expels it into the atmosphere. The hood is ventilated of the air drawn from inside the laboratory which is used effectively for thorough sweep-out of the work chamber.

HERAIS HEWI-FH offers a wide range of Walk in Fume hood to suit every specific application of the user. It is floor mounted, dual layered, designed to isolate a work process within a larger workspace so as to not cross contaminate between various applications. Used in Clinical, Research Field, Laboratories, Micro-organism studies. Also known as Floor-mounted lab hoods.

HERAIS MFE-1 Mobile Fume Extractor is purification equipment which can provide the partial high pure environment.
The airflow is vertical laminar flow type. It is widely used in medical research laboratories, precision instrument, bio-pharmacy, micro-organism studies and etc.
Freely moving, easy to operate and install.
The purification system consists of fan, primarily efficient filter-high efficient filter and activated carbon filter.
HEPA filter ensures the filtering efficiency to 99.999% efficiency at 0.3μm.

HERAIS HE-EXH Ceiling / Wall Bench -Top Arms Extraction Hood can be used in every type of environment, ranging from assembly stations, where solder fumes are extracted, to laboratories, where protection against highly corrosive or noxious gases is vital.
Bench - Top arms are supplied with a mini hood as standard – no extra extraction nozzle is required.
The mini hood is also a universal interface for connecting to other hoods.
A metal hood or transparent multipurpose hood can be attached directly to the mini hood, irrespective of arm size.
The optional multi-purpose hood can be used both as a dome and a screen hood. It has excellent screening properties, is fully transparent and does not cause optical distortions. The extraction hood can be easily angled to suit any extraction situation.