What is a ductless fume hood?
A ductless fume hood, also called a filtering chemical fume hood, is a laboratory workstation that provides protection of the user against chemical hazards. Just like a ducted fume hood, it creates an up-flow of air. But instead of sending the air outside via the HVAC system, a ductless fume hood has a ventilator that pulls the air through carbon filters. The carbon filters contain active charcoal that has chemical coatings. The chemical coatings can capture chemical vapours through a process called adsorption (molecular attraction). For different types of chemicals (solvents, acids, bases, ammonia, formaldehyde, …) there are different types of coatings.
Analis is a distributor of Erlab.
Erlab has invented this technology and is the current market leader in ductless fume hoods.
What are the advantages of a ductless fume hood?
- The environment: with ductless fume hoods, you capture the chemicals and process them with chemical waste instead of sending them outside.
- Energy efficiency: laboratory air is conditioned. In the winter you heat the air and in the summer, you cool the air. This takes a lot of energy. A classical ducted fume hood sends the heated or cooled air outside with a high flow rate. This is an enormous energy loss of thousands of euros per year. A ductless fume hood only has the electrical usage of the FAN and electronics, which is around 100 euro a year.
- Installation: the installation of a ductless fume hood is limited to the assembly and validation. A ducted fume hood on the other hand also needs to be connected to a HVAC system.
- Flexibility: with ducted fume hoods, you need to consider the maximum capacity of the HVAC system. Sooner or later you reach a max number of fume hoods, and then you need to expand your entire HVAC system to connect more units. Using ductless fume hoods, you don’t have any limitations in terms of number of units. Also, if you want to move to another lab, ductless fume hoods are much easier to move, because they don’t need to be detached and re-attached to the HVAC system. You simply move the cabinet and re-validate it.
- Use of powder chemicals: powders chemicals and classical ducted fume hoods are not a good combination. If powders are removed via the HVAC system, they can accumulate in corners of the HVAC systems. This is because powder particles are heavier than air, so when making a turn, they move to the corners. Ductless fume hoods on the other hand, can be easily configured with HEPA filters below the carbon filters. This way, you capture the powder particles. Sometimes only powder chemicals are used, and no carbon filter is needed. ‘In that case, it can also be called a powder weighing station or balance enclosure when the cabinet is fitted with a Trespa work surface or a marble table.
- Weighing: a classical ducted fume hood is connected to the outside via the HVAC system. Outside air has a very variable speed. This speed variation will partially translate in a variable speed and pressure of the air in the ducted fume hood. Pressure variations have an influence on weighing results. A ductless fume hood is not connected to the outside, so therefore has a much more stable flow. This makes it more suitable for weighing applications. For more info: read the application note weighing in a ductless fume hood.
What are the disadvantages of a ductless fume hood?
- Carbon filters have a limited speed to capture chemical vapours. When the evaporation is very high, they cannot be used. Only around 70% of all applications can be done in ducted fume hoods. The risk assessment can determine if a ductless fume hood is suitable for a certain application or not.
- The risk assessment for a ductless fume hood is much more detailed. The risk assessment is the basis to see if the technology is suitable, what sensors are needed, what filters are needed and what the lifetime of the filters will be. The supplier can offer support for filling in this risk assessment.
- The filters need to be changed on a routine base. Carbon filters get saturated after a certain period or reach their max lifetime. When this happens, they need to be replaced. This is a returning cost. In practice, the cost of the filter is in most cases a lot lower than the cost of the energy loss when using a ducted fume hood. The cost of the filter can be estimated in advance by the manufacturer based on the risk assessment.
Is a ductless fume hood safe?
A ductless fume hood is at the very least as safe as a ducted fume hood if you do the risk assessment properly. During the risk assessment, the manufacturer evaluates if the chemical vapours can be captured and they include a certain safety margin. In case the user underestimates the used chemicals, the filters will be saturated earlier than predicted and the bottom filters are not replaced in time. In that case there is a sensor that will give the user a signal that the first filter layer is saturated, and there is still a backup filter that gives the user more than enough time to replace the saturated filter layer. When you change your application, it is important to contact the distributor to adjust the risk assessment. They can re-confirm or adjust the configuration and re-calculate the new filter lifetime.
Also, there is NFX 15211-2009 standard that defines a set of tests to insure that the cabinet is working properly. These tests are performed during installation and yearly maintenance.
What information is needed to do a risk assessment for a ductless fume hood?
The manufacturer needs all information to evaluate what chemicals are evaporating, and at what speed.
- The application: how the chemicals are used is important to estimate the evaporation surface and speed. Also the temperature of the application can have an influence on the evaporation.
- The used chemicals: the name of the chemicals (or CAS number) is needed to evaluate what coatings are needed on the active charcoal.
- The concentration of the chemicals
- The duration of each experiment/manipulation
- The frequency of each experiment/manipulation.
Complete your risk assessment here
Maximize Energy Efficiency and Reduce Costs
A study (*) by the Center for Energy Efficient Laboratories highlights that ducted fume hoods are the largest energy users in the lab.
The report, which examines lab equipment energy use in California.
(*) For more detailed insights, refer to the Market Assessment of Energy Efficiency Opportunities in Laboratories (2015) by My Green Lab, (market assessment available here).
Download the study report
Having identified ducted fume hoods as the most energy-consuming type of equipment, and therefore those on which the impact of a reduction will potentially be the strongest, we can very logically imagine the considerable impact of energy savings nationwide by transitioning to ductless systems.
Captair ductless filtering fume hoods product overview
Nos produits
ERLAB
Hotte sans raccordement Captair Smart 321 0,8 m
Reference :
ERL-AA606B00011A21
La hotte Captair Smart 321 d'Erlab est une hotte à filtration sans raccordement qui protège l'utilisateur des vapeurs dangereuses produites par ses échantillons. Elle est silencieuse, facile à utiliser et entièrement personnalisable en fonction des besoins et des applications de votre laboratoire.
Caractéristiques:
- Ouverture de type oblong
- Réduisez les coûts d'installation, d'entretien et de fonctionnement grâce à une hotte sans raccordement
- Grâce à la technologie SMART inégalée d'Erlab, vous pouvez travailler en toute confiance, sachant que vous êtes entièrement protégé contre les fumées et particules dangereuses produites par vos applications de laboratoire
- Une communication simple par des impulsions sonores et lumineuses claires indique diverses informations, notamment les défauts, la durée de fonctionnement, la vitesse de l'air, la saturation du filtre, les réglages de ventilation, les pannes de ventilateur, etc.
- Dimensions globales (L x P) 780 x 620 mm. La hauteur dépend de la configuration du filtre et peut être comprise entre 1110 et 1285 mm.
- Acier électro-galvanisé résistant à la corrosion, recouvert d'un polymère anti-acide
- L'application eGuard est disponible pour la surveillance à distance de la hotte, la modification des paramètres et l'envoi immédiat d'alertes de sécurité sur vos appareils (téléphone mobile, tablette et PC)
- Une colonne de filtration pouvant être configurée pour traiter les liquides, les poudres ou les deux.
- Surveillance continue de la vitesse de l'air.
- 65W
Options:
- Trois options différentes pour la surface de travail avec bac de récupération intégré (Trespa/résine phénolique, acier inoxydable 304L ou verre trempé)
- Peut être fourni avec un plan de travail fixe ou mobile, ou vous pouvez utiliser votre propre plan de travail
- Le capteur de détection Molecode est disponible en trois types (acide, solvants et formaldéhyde)
- En nous indiquant les produits chimiques que vous manipulez, nous pouvons calculer le type de charbon actif ou de filtres HEPA dont vous avez besoin et mettre en place un programme de rotation des filtres afin de garantir une protection totale pendant de nombreuses années
- Filtre de sécurité en cas de saturation du filtre principal
- Disponible avec plusieurs options de robinets (azote, eau chaude, eau froide, vide, gaz naturel, air comprimé, eau distillée, eau non ionisée, méthane, etc.)
- Panneau arrière transparent
- Prise électrique interne 240 V
- Écoulement des déchets
- Évier (30 x 15 cm), emplacement à indiquer par le client
- Contrat de garantie et de service exclusif Analis disponible, comprenant des visites annuelles et le remplacement des filtres
Alimentation électrique :
- 230 V standard
Normes de sécurité
- AFNOR NF X 15-211:2009 : France - BS 7989 : Angleterre, DIN 12 927 : Allemagne - EN 1822:1998 (filtres HEPA H14 et ULPA U17) - Marquage CE
ERLAB
Captair 391 Smart Ductless Fume Hood 1m
Reference :
ERL-AA616B00011A21
The Erlab captair Smart 491 is a ductless filtration fume hood designed to protect the user by filtering hazardous vapors produced by your samples. It is quiet, easy to use and fully customizable to your exact needs and laboratory application.
Features:
- Oblong type opening
- Cut costs of installation, maintenance and operation with a ductless fume hood
- With Erlab’s unrivalled SMART technology you can work with complete confidence that you are fully protected from the hazardous fumes and particles produced from your laboratory applications
- Simple communication by clear sound and light pulses indicate varied information including faults, run time, air face velocity, filter saturation, ventilation settings, fan failure, etc.
- Overall dimensions (WxD) 1005x620 mm. Height is dependent on filter configuration and can be 1110-1285 mm.
- Corrosion resistant, electro-galvanized steel coated with an anti-acid polymer
- The eGuard App is available for remote control monitoring of the hood, changing the settings, and delivering safety alerts immediately to your devices (mobile phone, tablet and PC)
- One filtering column that can be configured to handle liquids, powders or both
- Continuous monitoring of air face velocity
- 65W
Options:
- Three different work surface options with built in spill tray (Trespa/phenolic resin, 304L stainless steel or tempered glass)
- Can be supplied with a fixed or mobile bench or you have the option to use your own bench
- The Molecode detection sensor can be supplied in three types (acid, solvents and formaldehyde)
- By providing us with your chemical handlings, we can calculate what type of activated carbon or HEPA filters you require and initiate a filter rotation schedule to ensure full protection for years to come
- Safety filter in case of main filter saturation
- Available with a number of tap options (nitrogen, hot water, cold water, vacuum, natural gas, compressed air, distilled water, un-ionized water, methane, etc.)
- Transparent back panel
- Internal 240V electrical socket
- Waste port
- Sink (30x15 cm), location to be indicated by customer
- Analis exclusive warranty and service contract available to include annual visits and replacement filters
Power supply:
- Standard 230V
Safety Standards
- AFNOR NF X 15-211:2009: France - BS 7989: England, DIN 12 927:Germany - EN 1822:1998 (HEPA H14 & ULPA U17 Filters) - CE Marking
ERLAB
Hotte sans raccordement Captair 392 Smart 1 m
Reference :
ERL-AA636B00014A21
La hotte sans raccordement Erlab captair Smart 392 est conçue pour protéger l'utilisateur en filtrant les vapeurs dangereuses produites par les échantillons. Elle est silencieuse, facile à utiliser et entièrement personnalisable en fonction des besoins précis et de l'application du laboratoire.
Caractéristiques :
- Ouverture de type Reverso
- Réduisez les coûts d'installation, de maintenance et d'exploitation grâce à une hotte sans conduit
- Grâce à la technologie SMART inégalée d'Erlab, vous pouvez travailler en toute confiance, sachant que vous êtes entièrement protégé contre les fumées et particules dangereuses produites par vos applications de laboratoire
- Une communication simple par des impulsions sonores et lumineuses claires indique diverses informations, notamment les défauts, la durée de fonctionnement, la vitesse de l'air, la saturation du filtre, les réglages de ventilation, les pannes de ventilateur, etc.
- Dimensions hors tout (L x P) 1005 x 749 mm. La hauteur dépend de la configuration du filtre et peut varier entre 1340 et 1515 mm.
- Acier électro-galvanisé résistant à la corrosion, recouvert d'un polymère anti-acide.
- L'application eGuard permet de contrôler la hotte à distance, de modifier les réglages et de recevoir immédiatement des alertes de sécurité sur vos appareils (téléphone portable, tablette et PC).
- Une colonne de filtration pouvant être configurée pour traiter les liquides, les poudres ou les deux.
- Surveillance continue de la vitesse de l'air.
- 105W
Options:
- Trois options différentes pour la surface de travail avec bac de récupération intégré (Trespa/résine phénolique, acier inoxydable 304L ou verre trempé)
- Peut être fourni avec un plan de travail fixe ou mobile, ou vous pouvez utiliser votre propre plan de travail
- Le capteur de détection Molecode est disponible en trois types (acide, solvants et formaldéhyde)
- En nous indiquant les produits chimiques que vous manipulez, nous pouvons calculer le type de charbon actif ou de filtres HEPA dont vous avez besoin et mettre en place un programme de rotation des filtres afin de garantir une protection totale pendant de nombreuses années
- Filtre de sécurité en cas de saturation du filtre principal
- Disponible avec plusieurs options de robinets (azote, eau chaude, eau froide, vide, gaz naturel, air comprimé, eau distillée, eau non ionisée, méthane, etc.)
- Panneau arrière transparent
- Prise électrique interne 240 V
- Écoulement des déchets
- Évier (30 x 15 cm), emplacement à indiquer par le client
- Contrat de garantie et de service exclusif Analis disponible, comprenant des visites annuelles et le remplacement des filtres
Alimentation électrique :
- 230 V standard
Normes de sécurité
- AFNOR NF X 15-211:2009 : France - BS 7989 : Angleterre, DIN 12 927 : Allemagne - EN 1822:1998 (filtres HEPA H14 et ULPA U17) - Marquage CE
ERLAB
Captair 481 Smart Ductless Fume Hood 1m20
Reference :
ERL-AA626B00011A21
The Erlab captair Smart 481 is a ductless filtration fume hood designed to protect the user by filtering hazardous vapors produced by your samples. It is quiet, easy to use and fully customizable to your exact needs and laboratory application.
Features:
- Oblong type opening
- Cut costs of installation, maintenance and operation with a ductless fume hood
- With Erlab’s unrivalled SMART technology you can work with complete confidence that you are fully protected from the hazardous fumes and particles produced from your laboratory applications
- Simple communication by clear sound and light pulses indicate varied information including faults, run time, air face velocity, filter saturation, ventilation settings, fan failure, etc.
- Overall dimensions (WxD) 1260x620 mm. Height is dependent on filter configuration and can be 1110-1285 mm.
- Corrosion resistant, electro-galvanized steel coated with an anti-acid polymer
- The eGuard App is available for remote control monitoring of the hood, changing the settings, and delivering safety alerts immediately to your devices (mobile phone, tablet and PC)
- One filtering column that can be configured to handle liquids, powders or both
- Continuous monitoring of air face velocity
- 65W
Options:
- Three different work surface options with built in spill tray (Trespa/phenolic resin, 304L stainless steel or tempered glass)
- Can be supplied with a fixed or mobile bench or you have the option to use your own bench
- The Molecode detection sensor can be supplied in three types (acid, solvents and formaldehyde)
- By providing us with your chemical handlings, we can calculate what type of activated carbon or HEPA filters you require and initiate a filter rotation schedule to ensure full protection for years to come
- Safety filter in case of main filter saturation
- Available with a number of tap options (nitrogen, hot water, cold water, vacuum, natural gas, compressed air, distilled water, un-ionized water, methane, etc.)
- Transparent back panel
- Internal 240V electrical socket
- Waste port
- Sink (30x15 cm), location to be indicated by customer
- Analis exclusive warranty and service contract available to include annual visits and replacement filters
Power supply:
- Standard 230V
Safety Standards
- AFNOR NF X 15-211:2009: France - BS 7989: England, DIN 12 927:Germany - EN 1822:1998 (HEPA H14 & ULPA U17 Filters) - CE Marking
ERLAB
Captair 483 Smart Ductless Fume Hood 1m20
Reference :
ERL-AA646B00014A21
The Erlab captair Smart 483 is a ductless filtration fume hood designed to protect the user by filtering hazardous vapors produced by your samples. It is quiet, easy to use and fully customizable to your exact needs and laboratory application.
Features:
- Reverso type opening
- Cut costs of installation, maintenance and operation with a ductless fume hood
- With Erlab’s unrivalled SMART technology you can work with complete confidence that you are fully protected from the hazardous fumes and particles produced from your laboratory applications
- Simple communication by clear sound and light pulses indicate varied information including faults, run time, air face velocity, filter saturation, ventilation settings, fan failure, etc.
- Overall dimensions (WxD) 1280x749 mm. Height is dependent on filter configuration and can be 1340-1515 mm.
- Corrosion resistant, electro-galvanized steel coated with an anti-acid polymer
- The eGuard App is available for remote control monitoring of the hood, changing the settings, and delivering safety alerts immediately to your devices (mobile phone, tablet and PC)
- One filtering column that can be configured to handle liquids, powders or both
- Continuous monitoring of air face velocity
- 160W
Options:
- Three different work surface options with built in spill tray (Trespa/phenolic resin, 304L stainless steel or tempered glass)
- Can be supplied with a fixed bench or you have the option to use your own bench
- The Molecode detection sensor can be supplied in three types (acid, solvents and formaldehyde)
- By providing us with your chemical handlings, we can calculate what type of activated carbon or HEPA filters you require and initiate a filter rotation schedule to ensure full protection for years to come
- Safety filter in case of main filter saturation
- Available with a number of tap options (nitrogen, hot water, cold water, vacuum, natural gas, compressed air, distilled water, un-ionized water, methane, etc.)
- Transparent back panel
- Internal 240V electrical socket
- Waste port
- Sink (30x15 cm), location to be indicated by customer
- Analis exclusive warranty and service contract available to include annual visits and replacement filters
Power supply:
- Standard 230V
Safety Standards
- AFNOR NF X 15-211:2009: France - BS 7989: England, DIN 12 927:Germany - EN 1822:1998 (HEPA H14 & ULPA U17 Filters) - CE Marking
ERLAB
Captair 633 Smart Ductless Fume Hood 1m60
Reference :
ERL-AA656B00014A21
The Erlab captair Smart 633 is a ductless filtration fume hood designed to protect the user by filtering hazardous vapors produced by your samples. It is quiet, easy to use and fully customizable to your exact needs and laboratory application.
Features:
- Reverso type opening
- Cut costs of installation, maintenance and operation with a ductless fume hood
- With Erlab’s unrivalled SMART technology you can work with complete confidence that you are fully protected from the hazardous fumes and particles produced from your laboratory applications
- Simple communication by clear sound and light pulses indicate varied information including faults, run time, air face velocity, filter saturation, ventilation settings, fan failure, etc.
- Overall dimensions (WxD) 1604x749 mm. Height is dependent on filter configuration and can be 1340-1515 mm.
- Corrosion resistant, electro-galvanized steel coated with an anti-acid polymer
- The eGuard App is available for remote control monitoring of the hood, changing the settings, and delivering safety alerts immediately to your devices (mobile phone, tablet and PC)
- One filtering column that can be configured to handle liquids, powders or both
- Continuous monitoring of air face velocity
- 160W
Options:
- Three different work surface options with built in spill tray (Trespa/phenolic resin, 304L stainless steel or tempered glass)
- Can be supplied with a fixed bench or you have the option to use your own bench
- The Molecode detection sensor can be supplied in three types (acid, solvents and formaldehyde)
- By providing us with your chemical handlings, we can calculate what type of activated carbon or HEPA filters you require and initiate a filter rotation schedule to ensure full protection for years to come
- Safety filter in case of main filter saturation
- Available with a number of tap options (nitrogen, hot water, cold water, vacuum, natural gas, compressed air, distilled water, un-ionized water, methane, etc.)
- Transparent back panel
- Internal 240V electrical socket
- Waste port
- Sink (30x15 cm), location to be indicated by customer
- Analis exclusive warranty and service contract available to include annual visits and replacement filters
Power supply:
- Standard 230V
Safety Standards
- AFNOR NF X 15-211:2009: France - BS 7989: England, DIN 12 927:Germany - EN 1822:1998 (HEPA H14 & ULPA U17 Filters) - CE Marking
ERLAB
Captair 714 Smart Ductless Fume Hood 1m80
Reference :
ERL-AA666B00014A21
The Erlab captair Smart 714 is a ductless filtration fume hood designed to protect the user by filtering hazardous vapors produced by your samples. It is quiet, easy to use and fully customizable to your exact needs and laboratory application.
Features:
- Reverso type opening
- Cut costs of installation, maintenance and operation with a ductless fume hood
- With Erlab’s unrivalled SMART technology you can work with complete confidence that you are fully protected from the hazardous fumes and particles produced from your laboratory applications
- Simple communication by clear sound and light pulses indicate varied information including faults, run time, air face velocity, filter saturation, ventilation settings, fan failure, etc.
- Overall dimensions (WxD) 1805x749 mm. Height is dependent on filter configuration and can be 1340-1515 mm.
- Corrosion resistant, electro-galvanized steel coated with an anti-acid polymer
- The eGuard App is available for remote control monitoring of the hood, changing the settings, and delivering safety alerts immediately to your devices (mobile phone, tablet and PC)
- One filtering column that can be configured to handle liquids, powders or both
- Continuous monitoring of air face velocity
- 220W
Options:
- Three different work surface options with built in spill tray (Trespa/phenolic resin, 304L stainless steel or tempered glass)
- Can be supplied with a fixed bench or you have the option to use your own bench
- The Molecode detection sensor can be supplied in three types (acid, solvents and formaldehyde)
- By providing us with your chemical handlings, we can calculate what type of activated carbon or HEPA filters you require and initiate a filter rotation schedule to ensure full protection for years to come
- Safety filter in case of main filter saturation
- Available with a number of tap options (nitrogen, hot water, cold water, vacuum, natural gas, compressed air, distilled water, un-ionized water, methane, etc.)
- Transparent back panel
- Internal 240V electrical socket
- Waste port
- Sink (30x15 cm), location to be indicated by customer
- Analis exclusive warranty and service contract available to include annual visits and replacement filters
Power supply:
- Standard 230V
Safety Standards
- AFNOR NF X 15-211:2009: France - BS 7989: England, DIN 12 927:Germany - EN 1822:1998 (HEPA H14 & ULPA U17 Filters) - CE Marking
