The Series-GS molecular filtration fume hoods can be supplied in their ST configuration (grossing station) with dedicated equipment that makes them suitable for protecting personnel exposed to the inhalation risk of hazardous volatile chemicals generated during the handling/trimming of formalin-fixed samples, typically found in pathology and histology laboratories.

Thanks to their filtration system, they provide protection both for personnel and for the external environment, complying with the most stringent regulatory requirements while reducing plant engineering impact through the possibility of integrating the system directly onboard the unit.

The installed filters are specifically designed for formaldehyde retention; however, secondary filters such as HEPA H14 filters can also be added for handling fresh specimens, as well as additional activated carbon filters to achieve maximum filtration efficiency.

The exhaust ducting system can be configured using either the onboard motor operating in tandem with remote fans, or partialization dampers when a centralized ventilation system is available, among many other solutions. Our specialists will be able to recommend the most suitable configuration for your specific application.

It features:

• High containment factor ensured by an especially designed aerodynamic, tested to EN14175-3 and EN14175-6 at 0.3m7s and 0.5m/s face velocity from authorized body
• High efficient activated carbon filtration system, BS7989:2001 certified with specific tests against isopropyl alcool, ammonia, sulphur dioxide and formaldehyde showing a 99% filtration efficiency
• Absolute particles filter availability HEPA classe H14 (99.995% @ 0,3 µm-Rif. EN1822:2009)
• Pre-filtration through dust-prefilter M6 class to prevent premature saturation of the main filters
• Air-tight plenum that guarantees zero leakages
• Counterweighted sliding front and lateral panels made with laminated safety glass (3+3 PVB) that ensure high chemical resistance and durability
• Variable speed embedded fan according to frontal sash position (VAV system – variable air volume)
• Internal IP65 lighting wiith 1000lux capability
• Thress sizes availability: 1200/1500/1800 mm widths

Functional flexibility

The whole GS-Series fume cupboard range can work within three different modes:

• FE S/M-MODE: filtration+exhaust mode with embedded fan. The fume cupboard is equipped with filtration system and fan and works exhausting the air thorugh a duct collard in a exhausting-pipe using on-board fan but keeping at the same time the filtration system on board. This solution simplifies the installazion of the unit as no remote-fan is required.
• FE-C/M-TH-MODE: filtration+exhaust mode with embedded fan and THIMBLE connection to the ventilation system. The fume cupboard is equipped with embedded filters and fan; the filtered air is conveyed outside through a thimble connection linked to an existing ventilation duct equipped with an auxiliary remote blower as well. This solution allow to decouple the containment of the hood from the design point of the ventilation system.
• FE C/M-MODE: filtration+exhaust mode with remote fan. The fume cupboard is equipped with filtration system and works exhausting the air thorugh a duct collard in a exhausting-pipe using a frequency-conveter-controlled fan but keeping at the same time the filtration system on board. This solution allow to fit installation-sites where long-exhausting pipes are present and where total negative pressure is strictly required from the working area within the unit up to the external. According to exhaust-system layout the fume cupboard can even be equipepd with a parzialization valve.

CE marking

• 2006/42/UE Machinery Directive
• 2014/35/UE Low Voltage Directive (50-1000 V)
• 2014/30/UE Electromagnetic Compatibility Directive
• 2011/65/UE ROHS Directive

Equipment

The 1.2mm thickness AISI316 stainless steel worktop is equipped with:

• wide cutting area with undermount fluid-recovery sink equipped with water nozzles for wasting fluids washing
• sink with hot/cold water tap equipped with pneumatic-electrically controlled macerator
• drip-cup for exhausted formalin recovery equipped with waste-filter, cap and swanneck fresh-formalin foot-controlled spigot
• underbench closed storage cabinet with retractable drawer for formalin tanks and solid-waste
• fresh-formalin supply system with 12V-DC pump and foot control and level sensor on carboy with acoustic and visual alarm

The frontal sash is counterweighted and can be manually moved. Electrical handling with foot controls available as optional.

The control panel of the fume cupboard (TIMELOG) allow a real-time showing of  main functional parameters such as:

• air face velocity and exhausting flow rate
• residual time to next filter or prefilter replacement/control (two different timers)
• working opening height
• air temperature
• warming-up cycle with self-testing routint of the prefilter saturation level

The TIMELOG allow the showing of the following alarms:

• air face velocity below the safety-threshold
• working opening height above maximum
• air-temperature beyond maximum level for a good absorption capacity
• expired filter/prefilter estimated lifetime

STANDARDS

The whole range of filtration fume cupboard GS-Series ST-execution has been designed, manufactured and certified following the prescriptions of the best international standards:

• BS7258:1994 – Laboratory fume cupboards: specification for safety and performance
  Containment and face air-velocity test
• BS7989:2001 – Specification for recirculatory filtration fume cupboards
  Retention capacity and efficiency test of the activated carbon filtration system installed on a recirculating fume cupboard. The reference chemicals used within this standard are: isopropyl alcohol, ammonia, formaldehyde and sulfur dioxide
• ANSI/ASHRAE110:1995 – Method of Testing Performance of Laboratory Fume Hoods
  Containment and face air-velocity test
• DIN 12924
  Containment test with use of SF6 tracer gas

Furthermore, the whole range of GS-Series is manufactured according to EN14175-2 requirement, and it is provided with conformity declaration certificate.

All models have been tested and certified to EN14175-3 and EN14175-6 both at 0.3 and 0.5m/s face velocity.

CONSTRUCTION

• RAL 7035 coloured epoxy-powder MICROFREE® antimicrobial coated rolled steel frame (stainless steel AISI304 frame availability)
• RAL7015 coloured epoxy-powder MICROFREE® antimicrobial coated aluminium aerodynamic shaped uprights
• Internal back and soffit baffle made in HPL antiacid laminate (stainless steel AISI304 frame availability)
• AISI316 stainless steel worktop
• Frontal counterweighted sliding sash with double-rope suspension made with 3+3 PVB safety glass
• Lateral panel made with 3+3 PVB safety glass
• Electrical system IP44 with magneto-thermic switch protection
• Embedded fan electronically controlled
• GS1200: power supply 220V-50Hz-450W
• GS1500/GS1800: power supply 220V-50Hz-560W
• Exhausting system connection through 250mm diameter manifold

ACCESSORIES

• UV-Light integrated system for internal chamber sterilization. Sterilization-cycle management directly available on the TIMELOG system
• Underbench ventilated storage for fresh/wasted formalin and solid-waste bin
• Solid-waste disposal conveyor directly attached to the worktop
• Electrical sockets or RJ45
• Magnetic rack for surgical instruments
• Magnifying lens with LED lamp (7000lux)
• Back-baffle-installed shelf
• Full integration availability of digital imaging system
• External articulated arm for monitor/panel-pc support