There are two types of filters (Carbon filters & Particulate Filters) that could be required in a fume hood and selecting the correct type of filters for your application is imperative to protect yourself and your equipment from any hazardous substances in the air. You could use your filters more effectively by installing one or both depending on the purpose.

Application	Details	Arm Material	Recommended Hood Type	Hood Position / Airflow Velocity(m/s) 1)	Recommended Filter
Medical / Dentistry / Veterinary	Fumes from laser treatment	Aluminum, PP	50Φ Basic	Side / 0.5	HEPA & Carbon
	Dentist dust and chemical uses		75Φ Basic or Chamber	Side / 0.5	HEPA & Carbon
	Aerosol from anesthetic		75Φ Dome or Square	Side / 0.5	Carbon or HEPA & Carbon
	Use of biopsy chemicals in clinical laboratory		Chamber	Surround / 0.4	Carbon or HEPA & Carbon
Pharmaceuticals	Dust and fume from odorous chemicals in the pharmaceutical laboratory	Aluminum	75Φ Basic	Side / 1.0 Above / 1.2	HEPA or HEPA & Carbon
			Chamber	Surround / 0.7	HEPA
Metal / Acrylic craft	Hazardous fumes and dust from molten metal and welding during the metal cutting process	Aluminum, PP	Basic or Dome	Dust: Side / 1.2 Fume: Side / 0.5	Carbon or HEPA & Carbon
Electronic engineering	Fumes from brazing and soldering	Aluminum	75Φ Dome or 50Φ Basic	Side / 0.5	Carbon or HEPA & Carbon
Laboratory	Science experimental education	Aluminum, PP	75Φ Dome	Dust: Side / 1.2 Fume: Side / 0.5	Carbon or HEPA & Carbon
			Chamber (For Formalin Users)	Surround / 0.4	Carbon or HEPA & Carbon
Chemicals/Biologicals / Agricultural	Hazardous chemicals from acid and base	PP	75Φ Dome or Square	Dust: Side / 1.2 Fume: Side / 0.5	Carbon or HEPA & Carbon
			Chamber (For Formalin Users)	Surround / 0.4

Table 1. Recommended configuration of Mobile Fume Extractor for each application.

¹⁾ Applied based on the Korea Occupational Safety and Health Act

Figure 1. Physical Adsorption and Chemisorption with Carbon Filter

Figure 2. Structure of HEPA Principle

Lab Companion’s Filter is an excellent amorphous adsorbent with high surface area, has fine pores, and is manufactured through a multi-level impregnation process. We have five main filters suitable depending on the chemical used and laboratory environment. For the built-in Pre-Filter, the particle is filtered first to extend the life of the other filter and up to 2 filters(option) can be installed depending on the material used. You may refer to the below table for selecting appropriate filters for each purpose.

Filter	Description
Complex Carbon	Filters a wide range of chemicals, including acid, ammonia, and aldehyde.
Acid	Filters acid gases such as HCl, HF, H2S, and CH3COOH
Formaldehyde	Filters formaldehyde, acete aldehyde, etc.
Ammonia / Amines	Filters basic gases such as NH3, (CH3)3N, etc.
HEPA	Filters 99.99% of toxic dust and other 0.3 μm particles.
Pre-Filter	Primarily filters particles to extend the life of other filters.

※ Select a suitable filter according to the chemical used.

Extraction Arms provides ease of use while efficiently and cost-effectively directing contaminates away from the workplace. In order to select the Extraction Arm, you may select the appropriate materials, diameter, and joints according to the physical properties of the fumes and gases used, work type, and working radius.
Lab Companion provides the various size of the Extraction Arm. You can select 2 Joint / 3 Joint and length is determined considering the access radius of the arm. You can also select a size between 50mm and 75mm according to the volume to be subjected to suction. Usually, 75mm size is used for general purposes, on the other hand, 50mm size is more effective for fine work. You can also choose the Single or Dual Arm to maximize the space efficiency.
(※ Fan level could be reduced when the Dual Arm is applied).

Hood type should be selected depending on the properties of gas and the diffuse range of fume. We have four types of hoods depending on the shapes and materials according to the nature of the fumes and gases used and work type. It is also composed of chemical resistance using PP and SBC materials. When the emission range of the source is narrow, the Basic Type is suitable but when the emission range of the source is wide, the Dome Type is more effective. When heavy gas is collected, one side of the Square Type is supported on the table and used as a shield. When you apply the Hood Type as compact total hood form, it securely blocks the user's gas inhalation. Lab Companion offers Φ50 Dome Type hood mounted on extraction arm as standard. Ø75 Basic Type hood is provided as an integral part of the extraction arm and you could also select the various hood type depending on the purposes as mentioned below.

	Basic Type - When the emission range of the source is narrow. - When the source can be collected at close range.		Dome Type - When the emission range of the source is wide. - Used for capturing light gas. - Clear(Styrene-butadiene copolymer)/White(Polypropylene)
	Square Type - When heavy gas is collected, one side is supported on the table and used as a shield. - Clear(Styrene-butadiene copolymer)/White(Polypropylene)		Hood Type - Compact total hood form, securely blocking the user's gas inhalation. - White (Polyethylene)

Dome Type

Square Type

Chamber Type

Additionally, we have a new arm hood system for Ø75 Extraction arm, called "LC Magnet System", to replace easily a dome without any assembly thanks to the magnetic on the connection part of the arm and a dome to the magnetic on the connection part of the arm and dome.

>> What is LC Magnet System? (Click for more information)

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by listening to and reflecting the feedback of customers through sales, services, validation, etc.
JEIO TECH is creating safer research environments through Lab Companion,
the best partner of researchers and experimenters.

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