A ductless fume hood can be considered if the following criteria are met:
Limited or specific chemicals and substances, the SBT Apex range of Ductless Fume Cabinets can be supplied with a range of filter media to suit many applications for example:
- Particulate – HEPA filters (High Efficiency Particulate Air) can filter particulate matter down to 0.3 microns to 99.99% efficiency
- Organic Vapours – Activated Carbon Filters
- Acids and Sulphur
Limited Chemical Volumes, typically it is not recommended to use a ductless fume cabinet if more than 500 mL of any chemical is to be used in the cabinet.
Limited or Short Duration, depending on the chemicals being used and the duration that the cabinet will be in operation every day will have a significant impact on the life of the filters. The expected life of the filters will usually range between 6 months and 2 years, these costs will have to be compared to the installation costs of a ducted fume cabinet as well as the additional energy costs incurred as airconditioned air is exhausted from the building.
High Temperatures, in most cases it is not recommended that ductless fume cabinets be used in applications requiring high temperatures such as acid digestion.
Our team of experts will be able to assist you in determining whether your application is suitable for a ductless fume cabinet and what filters you would require.