Ductless Fume Hood 24 Inch

Ductless fume hoods move air in principle similar to that of conventional vented or ducted hood, except ductless hoods are self contained and re-circulate air back into the lab after filtration occurs. Ductless fume hoods use a combination of High Efficiency Particulate Air (HEPA) filters or advanced Activated Carbon Filtration technology to remove particulates or molecules (vapors) from the air stream and bond them into the filter bed.

• Compact ductless fume hoods are efficient and economical, but provide many features found in the more expensive systems.
• Provides the operator safety where routine work is being carried out.
• Typical applications include histology, powder weighing and sampling prep work.
• Lightweight and completely portable units feature the following: low airflow alarm, 100 f/m face velocity, self-securing hinged door panels, whisper quiet 55 dBA brushless and sparkless centrifugal fan, clear acrylic sides for 360 degree viewing, a clamp that totally eliminates any by-pass leakage, and an electrostatic pre-filter.
• Epoxy-coated mild steel, with clear side panels. Chemical resistant epoxy-coated steel superstructure for unsurpassed strength in case of accidental fire, earthquake, or knocks and bumps.
• Units operate at low noise levels and because they re-circulate, they do not exhaust expensive conditioned and/or heated air into the atmosphere.
• Compact bench mounted unit that can be used for small amounts of chemicals.
• A face velocity of 100 fpm ensures containment of fumes and particulates for operator protection.
• An alarm will alert the operator when the airflow falls to an unacceptable level.
• The unit can be placed on any bench top, and an optional polypropylene spillage tray can be provided when required. Cat # 3343-10 (Sold Separately).
• The rear of the unit has lighting to illuminate the work surface.
• All mechanisms in the head section are on the clean side of the filter, with the switches and electrical components being isolated from any contamination.
• The patented filter clamping mechanism allows for the filter to be easily installed and ensures an even seal at the filter face at all times to prevent bypass leakage.
• Unit includes an electrostatic pre-filter to which optional filters may be added for specific applications (optional / additional filters sold separately)

# 3343-20: Carbon Filter for Solvents, Alcohols & Organics.
# 3343-21: Carbon Filter for Acids (recommended for general High School Science Use).
# 3343-22: HEPA Filter, for particulate application needs.
# 3343-23: EDU Filter, The multi layered EDU filter has been independently tested to have a 99.9% filtration efficiency for chemicals normally found in a typical chemistry curriculum

Features

• Pre-Filter Saturation Alarm: Alerts the operator (both audio and visual) when filters need to be changed.
  
• Filter I.D. Window: Ensures correct filter installation.
  
• Air Velometer: Continuous monitoring system of air velocity located in the vision field of the user.
  
• Easy to use control panel includes switch for blower, lights, an electronic hour counter, and low airflow alarm.
  
• Exceeds OSHA, ANSI and all relevant international standards . Pre-filter is changed from inside the enclosure preventing any particulate hazards.
• An integral port allows manual filter monitoring.
  
• Set desired blower motor speed.
  
• Units have a main on / off switch and runs on 110v, 60Hz (single phase).
  
• Included: pre-filter for dust, integral fluorescent lighting (explosion safe and mounted out of reach of operator’s line of sight), 2 rear mounted cable slip ports, 1 fan speed controller. Glassware shown not included.
  
• Warranty: 2 years manufacturer’s warranty - parts and labor - except filters.

Airflow (CFM): 117
Face Velocity (FPM) : 100
Lighting: 18 watts Main Filter Weight: 11 lb
HEPA: Optional
Noise Levels: Less than 55dBA
External Dimensions (W x D x H): 24 x 26 x 31.5 Inches
Internal Dimensions ( W x D x H): 22.8 x 24 x 19.5 Inches
Working Height: 19.5 Inches
Working Base Area: 22.8 x 24 Inches

Ductless Advantages

• No installation costs – Simply place the cabinet on a bench and connect to an electrical supply. No external ducting, building work or changes to heating and ventilation systems.
• Energy efficient operation – Recirculatory airflow eliminates the need for laboratory make-up air and integration into ventilation system controls.
• Continuous airflow monitoring – Integral electronic airflow monitoring with face velocity control for increased operator safety.
• Continuous filter saturation monitoring – Integral ‘real time’ electronic gas sensor for carbon filter monitoring.
• Environmental benefits – Activated Carbon filters retain / neutralize pollutants eliminating harmful discharge to the environment.
• Adaptable – Hood may be easily re-positioned or filters changed to suit new requirements at anytime.