Filtration Hood Without Connection 321 Midcap

The StemAids Filtration Hood Without Connection 321 Midcap is a ductless laboratory filtration hood designed for safer handling of compatible chemical vapours, powders, particles, solvents, acids, ammonia vapours, and formaldehyde vapours when fitted with the correct filter configuration. It is suitable for chemistry laboratories, schools, colleges, pharmaceutical labs, research facilities, industrial QC labs, and institutional science laboratories.

Product Description

The StemAids 321 Midcap Filtration Hood is a ductless fume hood that captures contaminants at the source and filters the air through a dedicated filtration column. Since it works without external duct connection, it reduces installation complexity and supports flexible laboratory placement.

The hood can be configured with activated carbon filters for gases and vapours, HEPA or ULPA particulate filters for powders and particles, or combined filtration for mixed applications. The correct filter must always be selected according to the chemicals, powders, concentration, quantity, and laboratory safety assessment.

Important Note: This product is a chemical filtration hood, not a Class II biological safety cabinet. It should not be used for biological containment, infectious aerosols, radioactive substances, explosive vapours, or unknown hazardous materials unless specifically assessed and approved by qualified laboratory safety personnel.

Product Specifications

Key Features

• Ductless design eliminates the need for external exhaust connection
• Compact 321 Midcap format suitable for laboratories with limited space
• 220 m³/h airflow supports controlled air capture inside the work zone
• Configurable filtration for liquids, powders, or combined applications
• Activated carbon filter options for organic, acid, formaldehyde, and ammonia vapours
• HEPA and ULPA filtration options for compatible powder and particle handling
• Chemical-resistant acrylic panels improve visibility and protection
• Anti-acid polymer coated steel structure supports laboratory durability
• 650 lux internal lighting improves visibility during chemical handling
• Low power consumption compared with ducted fume extraction systems

How to Use

1. Place the StemAids 321 Midcap Filtration Hood on a stable, level, and chemically suitable laboratory bench or approved support stand.
2. Confirm the chemical list, quantity, concentration, vapour type, and powder risk before selecting the filter.
3. Install the correct filtration column, such as carbon, HEPA, ULPA, or combined filtration as required by the application.
4. Connect the hood to the correct electrical supply as mentioned on the rating plate.
5. Switch on the hood and confirm proper airflow before beginning work.
6. Place only the required containers, chemicals, samples, and instruments inside the work area.
7. Keep the sash opening and airflow path clear during operation.
8. Perform chemical handling slowly to avoid airflow disturbance.
9. Keep chemical containers closed when not actively in use.
10. After work, allow the hood to run for a short purge period according to laboratory SOP.
11. Clean the work surface using a compatible laboratory-safe cleaning method.
12. Record filter usage time and replace filters according to saturation testing, usage history, and safety requirements.

Applications

• Chemical vapour handling under filtered conditions
• Organic solvent vapour filtration with suitable AS carbon filter
• Acid and organic vapour handling with suitable BE+ filter
• Formaldehyde vapour handling with suitable F filter
• Ammonia vapour handling with suitable K filter
• Powder and particle handling with suitable HEPA or ULPA filtration
• Reagent preparation and sample transfer
• School and college chemistry demonstrations
• Pharmaceutical QC sample preparation
• Research and industrial laboratory chemical handling

Safety and Handling Guidelines

• Always confirm chemical compatibility before using the filtration hood.
• Use only the correct filter type for the handled chemical or powder.
• Do not use the hood for unknown chemicals without a formal risk assessment.
• Do not use for explosive, radioactive, highly toxic, infectious, or biologically hazardous materials unless the hood is specifically certified for that purpose.
• Do not exceed the filter capacity, chemical quantity, or exposure limit defined by laboratory safety guidance.
• Check airflow before each use.
• Replace saturated or expired filters immediately.
• Do not block the air intake, sash opening, filter column, or internal airflow path.
• Wear suitable PPE such as gloves, goggles, lab coat, and respiratory protection where required by SOP.
• Keep ignition sources away when handling flammable vapours.
• Follow SDS instructions, institutional safety rules, and local chemical-handling regulations.
• Allow only trained personnel to install filters, service the hood, and approve chemical use.

Quality and E-E-A-T Notes

The StemAids Filtration Hood Without Connection 321 Midcap supports evidence-based laboratory safety by combining controlled airflow, application-specific filtration, chemical compatibility assessment, and documented filter maintenance. For safe operation, laboratories should maintain chemical lists, filter records, airflow checks, safety data sheet references, and SOP-based usage documentation.

FAQ

1. What is the StemAids Filtration Hood Without Connection 321 Midcap used for?

It is used for ductless filtered handling of compatible chemical vapours, powders, particles, reagents, and laboratory samples.

2. Does this hood need external ducting?

No, it is a ductless filtration hood. Air is filtered through selected filters and returned to the laboratory room.

3. What is the airflow of the 321 Midcap hood?

The airflow is approximately 220 m³/h or 135 CFM.

4. What is the face velocity?

The reference face velocity is approximately 0.4 to 0.6 m/s.

5. Which filters can be used?

Filter options include AS for organic vapours, BE+ for acid and organic vapours, F for formaldehyde vapours, K for ammonia vapours, and HEPA/ULPA filters for powders and particles.

6. Is the filter included?

Filter supply depends on the selected configuration. In many listings, the hood is supplied without filter, so the required filter must be selected separately according to application.

7. Can it be used for powders?

Yes, powder handling is possible when a suitable particulate filtration configuration, such as HEPA or ULPA, is installed and the application is approved.

8. Can it be used for solvents?

Yes, compatible solvent vapours can be handled when the correct activated carbon filter is selected and the chemical quantity is within the approved filter capacity.

9. Is this a biological safety cabinet?

No, this is a chemical filtration hood. It should not be used as a biological safety cabinet unless the exact model is certified for biological containment.

10. What materials are used in the hood construction?

The structure uses anti-acid polymer coated electro-galvanized steel, chemical-resistant acrylic panels, and a polypropylene filtration module.

11. What work surfaces are available?

Work surface options may include Trespa Top LabPLUS, tempered glass, or 304L stainless steel, depending on configuration.

12. How should filter replacement be managed?

Filter replacement should be based on filter type, chemical usage, saturation testing, exposure records, operating hours, and laboratory safety assessment.

Why Choose StemAids?

StemAids laboratory safety equipment is selected for practical workflows, user protection, and institutional laboratory requirements. The StemAids Filtration Hood Without Connection 321 Midcap supports ductless chemical handling, configurable filtration, reduced installation complexity, energy-efficient operation, and controlled laboratory workflows for schools, colleges, research laboratories, pharmaceutical units, chemistry labs, and industrial QC departments.

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