BULLDOG portable air scrubber with two speed. Ideal for asbestos abatement & decontamination workzone


Return conditions : No returnable if used. For more information about our return policy, please refer to the "Orders and Returns" link on the home page

BULLDOG® portable air scrubber (negative pressure vacuum) by Abatement Technologies. This air scrubber has a three steps filtration system ideal for abatement, lead or mold decontamination, or just for general dust suppression work (concrete dust, sawdust and plaster dust or powder). It is commonly referred to as negative air machine in the construction field.

Abatement Technologies manufacturer’s code: BD2KM

This air scrubber has three different modes: negative pressure mode, positive pressure mode, recirculation mode.  It also features two operating speeds. 1300 to 2000 cfm (pi³/min in French). The variation in speed provides less noise in small work zone.

It is equipped with three different filters which overlaps one another accordingly to a given order. The air scrubber comes with one set of filters, that is, a primary filter, an accordion-shaped secondary filter and a HEPA filter. It is now possible to replace the secondary filter by another secondary filter of activated coal for protection from organic vapours in low concentrations. This type of filter is particularly useful when it comes to mold decontamination work.

  • The primary filter (SAHFP) (24 in X 24 in X 1 in) captures bigger particles the size of 10 µm and more.
  • The secondary filter (SAHFS) (24 in X 24 in X 2 in) captures particles the size of 3 µm to 10 µm.
  • The HEPA filter (SAHF) (24 in X 24 in X 6 in) captures smaller particles the size of 0.3 µm and more with 99.97% efficiency.
  • In option, a secondary filter (SAHFSOV) of activated coal for protection from organic vapours in low concentrations (24 in X 24 in X 2 in) which also captures particles the size of 3 µm to 10 µm.

This air scrubber is certified UL94HB to comply with flammability requirements set by the responsible authorities. This air scrubber is certified ETL and meets CSA requirements as for safety standards. This equipment minimal power supply requirement is 120V/60 Hz. Its normal operating amps is 8 A. The polymer cabinet features a 12 in diameter airflow outtake which allows the connexion of the outlet pipe. A panel opens on the front to allow a convenient filter change.  

This machine weighs a total of 120 lb (54.55 kg) which is why it features two fixed and two locking 4 in diameter swivel casters. It also has four handles firmly anchored at the bottom of the device.

Unit dimensions:
Length, 27.5 po X Depth, 30.5 po X Height, 32 po
(Length, 69.85 cm X Depth, 77.47 cm X Height, 81.28 cm) 

Please note that on asbestos abatement or mold decontamination sites, a DOP test is required:

  • Before the start of a new development
  • Every time the unit is moved on work site
  • Every four weeks if the unit remains in situ during works
  • It is strongly advise to perform a DOP test on the site which is ready to start the work

The DOP test (Dispersed Oil Particulate) has been designed to ensure the integrity and efficiency of HEPA filters in terms of airborne particles containment based on their holding capacity of dispersed oil particulate of 0,3 µm. This type of test is a requirement because it pinpoints any leaks on the HEPA filter, that is, through its accordion-shaped material, its frame or its seals. Note that if particles go around the HEPA filter, the DOP test has failed.

HEPA filters are certified accordingly to current applicable regulations and a certification label shall be placed on the frame of the filter.

Please contact our customer service for more information. Additional travel cost may apply.

Intended as a guideline, here is the mathematical formula to determine the number of air scrubber required according to a given volume. For example:

Step 1, calculate the total volume of the work site
           Volume = Length X Width X Height = result in ft³
Step 2, establish the number of air changes required per hour; Québec regulations requires 4 air changes per hour, but elsewhere, it is normally 6 changes of air per hours.
Step 3, find out how many cfm your air scrubber can generate
Step 4, to find out the number of air scrubbers required
           Number of air scrubbers =          volume in ft³ 
                                                 15 min X air scrubber cfm
Step 5, round off to the next whole number

Example: 1300 cfm low speed BULLDOG and a volume of 20 000 ft³
Step 1: 20 000 ft³
Step 2: 4 air changes per hour, so 1 air change every 15 min
Step 3: BULLDOG00AE has a capacity of 1300 cfm
Step 4:                 20 000 ft³       = 1.02 air scrubber
                     15 min X 1300 cfm
Step 5: rounded off, 2 air scrubbers are required

        Example: 2000 cfm high speed BULLDOG and a volume of 20 000 ft³
        Step 1: 20 000 ft³
        Step 2: 4 air changes per hour, so 1 air change every 15 min
        Step 3: BULLDOG® has a capacity of 2000 cfm
        Step 4:                 20 000 ft³       = 0.66 air scrubber
                               15 min X 2000 cfm
        Step 5: rounded off, 1 air scrubber is required

According to these calculations and depending on the speed of the machine, 1 or many BULLDOG® air scrubbers are required on work sites in Quebec. Please consider that this result is theoretical since it only takes into account ideal conditions, that is, a perfect airtightness. However, in practice, it requires more cfm to offset the prospective leaks and loss of airflow intake. Opening a door to transfer wastes from one zone to another, power fluctuation, the length of the outlet pipe which may reduce the air scrubber airflow and the saturation level of the filters are all potential source of negative pressure loss. We thus recommend you foresee a more powerful air scrubber than what you theoretically need or more machines than calculated to ensure a safe work environment.

For more information, please consult the manufacturer’s manual available at the bottom of the page.

Type of productSafety equipment
Main categoryIndustrial accessoiries
Sub categoryAsbestos decontamination
Name of the productPortable air purifier
Product codeSAH4
Product useAir cleaners and accessories
Power supply requirements120 volts AC, 60 Hz, 15 amp circuit
Normal operating amps6.5 amps on highest speed and 8.0 amps on lowest speed
Operating flow rate600 cfm to 1800 cfm
Operational sound level72 dbA on high speed, reading taken at 5 feet
Primary filter capacityCapture particles 10 microns or larger.
Primary filter dimensions24 in X 24 in X 1 in
Secundary filter capacityCaptures particles the size of 3 µm to 10 µm.
Secundary filter dimensions24 in X 24 in X 2 in
HEPA filter dimensions24 in X 24 in X 6 in
HEPA Filter efficiencyEfficiency of 99.97%
HEPA Filter capacityCapture particles of 0.3 µm or more
Length (in/cm)36 in / 91.44 cm
Width (in/cm)36 in / 91.44 cm
Height (in/cm)24 in / 61 cm
Weight (lb/kg)125 lb / 56.7 Kg
Return conditionsNo returnable if used. For more information about our return policy, please refer to the "Orders and Returns" link on the home page


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