Ductless fume hoods
Labman Instruments is official distributor for Erlab ductless fume hoods and filtration technologies for Belgium, Netherlands and Luxembourg.
Erlab and ductless fume hood benefits
Erlab is the inventor and market leader for ductless fume hood technology. Ductless fume hoods or ductless fume cabinets are a green alternative to ducted fume hoods for chemical handling. Ductless fume cabinets use carbon filtration to capture chemical vapors instead of exhausting the air via the ventilation system. The main advantages include:
- No exhaust of temperature conditioned lab air, resulting in thousands of euros of energy loss for each hood
- No exhaust of toxic chemicals to the environment
- More scalable: no limit linked to the maximum capacity of the ventilation system
- More flexible: no connection needed to the ventilation system, so the ductless fume cabinet is easier to relocate
- Much more stable air flow than ducted fume hoods, making it more suitable for pressure sensitive applications like weighing
Available ductless fume hood models
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 764 mm
- Energy consumption: 65 W
- Sash opening: oblong type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 969 mm
- Energy consumption: 65 W
- Sash opening: oblong type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 1244 mm
- Energy consumption: 65 W
- Sash opening: oblong type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 969 mm
- Energy consumption: 105 W
- Sash opening: reverso type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 1244 mm
- Energy consumption: 160 W
- Sash opening: reverso type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 1569 mm
- Energy consumption: 160 W
- Sash opening: reverso type
Price on request
- Ductless fume cabinet
- Compliance: AFNOR NF X15-211: 2009
- Internal width: 1769 mm
- Energy consumption: 160 W
- Sash opening: reverso type
Price on request
Erlab Replacement Carbon Filters for Ductless Fume Hoods
Discover our full range of certified Erlab replacement carbon filters, including AS, BE+, F, and K filter types. Designed for Erlab ductless fume hoods, these molecular filters offer targeted filtration for chemical vapors such as solvents, acids, formaldehyde, and ammonia. Maintain maximum safety and performance with the right filter for your application.
- Item code: H11074101
- Replacement AS type filter
- Scope: for organic vapors
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
Original price was: €472,50.€441,00Current price is: €441,00. excl. VAT
- Item code: H11074401
- Replacement F type filter
- Scope: Formaldehyde vapors
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
Original price was: €723,00.€618,45Current price is: €618,45. excl. VAT
- Item code: H11074201
- Replacement BE+ type filter
- Scope: Inorganic acids and Solvent vapors
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
Original price was: €733,00.€651,00Current price is: €651,00. excl. VAT
- Item code: H11074301
- Replacement K type filter
- Scope: Ammonia vapors
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
Original price was: €831,00.€711,22Current price is: €711,22. excl. VAT
Particulate & Prefilters for Erlab Ductless Fume Hoods
Browse our selection of genuine Erlab replacement particulate filters and prefilters, including HEPA H14, ULPA U16, and Scope prefilters. These filters capture fine particles, powders, and aerosols, and protect your main filtration system. Ideal for labs using Erlab Captair Smart and Captair Flex hoods.
- Item code: I1015000001
- Replacement particulate prefilter
- Scope: large airborne particles
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
€50,00 excl. VAT
- Item code: H11074031
- Replacement HEPA filter
- Scope: particles (filtration global efficiency = 99,995%)
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
Original price was: €595,00.€514,50Current price is: €514,50. excl. VAT
- Item code: H11074061
- Replacement ULPA filter
- Scope: particles (filtration global efficiency =99,99995%)
- Models: all Erlab Captair Fume Hoods
- Replacement time: application dependent
€910,00 excl. VAT
Chemical Storage Cabinets – Safety and Compliance for Every Lab
Safe handling of chemicals starts with proper storage. The chemical storage cabinets from Asem are designed for the secure containment of acids, bases, solvents, and other hazardous substances. With their fire-resistant build and ventilation options, these safety cabinets reduce the risk of accidents and help maintain a compliant, well-organized laboratory. Whether in research facilities, education environments, or industrial sites, these cabinets put safety at the forefront.
Extraction Fume Hoods – The Ducted Solution
In addition to ductless fume hoods, the Asem laboratory fume hoods provide direct extraction to the outside, ensuring maximum safety when working with aggressive or large volumes of chemicals. Available in widths from 1200 to 2400 mm and in Class 0 metal, Class 1 melamine, and Class 1 PVC, these fume cupboards fully comply with EN 14175. They are the preferred choice for pharmaceutical, research, and industrial laboratories where centralized and permanent ventilation is essential.
Frequently asked questions
What is a ductless fume hood and how does a ductless fume hood work?
Ductless fume hoods protect the user against chemical vapors during laboratory work. The cabinet is made of 3 components:
- A cabinet/hood
- Ventilators
- Carbon filters (sometimes also particle filters)
The ventilators pull the air from the workstation through the carbon filters. The carbon filters capture the chemical vapors via a process called adsorption. After the filtration, the ventilators recirculate the clean air back into the laboratory.
What types of chemicals can and cannot be used in a ductless fume hood?
Ductless fume hoods can be used for approx. 70% of all chemical applications. The limitations are mainly when very large evaporation of volatile components take place, or when chemicals are heated. The Erlab evaliquest procedure can be submitted to see if ductless fume hood technology can be used for certain applications.
How do I select the correct filter for my application?
There are different types of activated carbon filters available for Erlab ductless fume cabinets that are optimized for specific groups of chemicals.
- AS type molecular filter: for predominantly organic vapors
- BE type molecular filters: for predominantly acidic and organic vapors
- F type molecular filters: for predominantly formaldehyde vapors
- K type molecular filters: for predominantly ammonia vapors
The best molecular filter type depends on the dominant vapor class of the chemical application. The Erlab evaliquest procedure can determine the best filter type based for your application.
For applications involving powder chemicals or installations in cleanrooms, particle filters can also be installed. Ductless fume hoods can be configured with HEPA H14 filters or ULPA U16 filters.
How often do filters need to be changed, and how is filter saturation monitored?
Filter lifetime of carbon filters depends on the following:
- Application type(s)
- Chemicals used
- Volumes of the used chemicals
- Concentration of the used chemicals
- Duration of chemical application
- Frequency of the chemical application
- Fume hood model and number of filter columns
- The ductless fume hood class according to the AFNOR NF X 15-211: 2009 standard
During the evaliquest risk assessment, filter lifetime can be estimated. It is advised to preventively replace the filters on the advised filter lifetime. Optional solvent sensors can also be integrated to monitor filter saturation of the main molecular filter layer.
Typical molecular filter lifetime is between 6 and 24 months.
Particle filters typically have a much longer lifetime. They are replaced after 5 years, or when the air speed starts to decrease due to the filter saturation.
What are the energy-saving and cost saving benefits of going ductless?
Ducted fume hoods are the largest energy users in the average laboratory. The energy consumption of ducted fume cabinets depend on the hood dimensions, the working hours, working days and the hood type (classical ducted fume hood, or fume hood with Variable Air Volume (VAC)). Here are some estimated yearly energy costs:
- 120 cm classical fume hood 8 working hours/day: 7300 euro/year
- 180 cm classical fume hood 8 working hours/day: 11 700 euro/year
- 120 cm classical fume hood 24 working hours/day: 35 800 euro/year
- 180 cm classical fume hood 24 working hours/day: 68 300 euro/year
This huge energy consumption is mainly due to air conditioning. All exhausted air needs to be compensated by the HVAC system and heated by the air conditioning. Ductless fume hoods recirculate the air into the lab. The energy consumption of ductless fume hoods is limited to the energy consumption of the ventilators, typically ranging between 200-300 euro/year.
Ductless fume hoods on the other hand also need replacement of the filters, which result in a consumable cost.