- Models HV-1 (single rotometer) and HV-2 (dual rotometer) are high volume air samplers. These models feature electronic flow regulation, a motor cooling fan within the motor housing, flow measurement and flow calibration capability. Many options are available upon request. Filter holder is optional.

 - The T8400 (120VAC) and the T8400E (220VAC) Series Air Samplers are high volume air samplers with a two stage, thermally protected electric motor driven vacuum blower and a 7-foot long electrical cord. A 4 inch (102 mm) filter is built into the unit.
 

 - Model DFHV-1 digital high volume air samplers provide simplicity of operation and improved accuracy. This model features a motor cooling fan within the motor housing, digital flow measurement, elapsed time and accumulated volume measurement capability. It has a bright LED display and a four button keypad.  Flow rates are corrected to a reference temperature and pressure. Filter holder is optional.

NIST

 - The DF-604 Series Air Sampling Systems are designed for remote unattended continuous air sampling applications. The DF-604 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flow rate range attainable through the filter media is dependent upon the air porosity of the filter media. The DF-604 Series design accommodates rapid field service and component replacement. Flow rates are corrected to a reference temperature and pressure. Filter holder is included.
NIST

 - The DF-60810 Series Air Sampling Systems are designed for remote unattended continuous air sampling applications. The DF-60810 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flow rate range attainable through the filter media is dependent upon the air porosity of the filter media. The DF-60810 Series design accommodates rapid field service and component replacement. Flow rates are corrected to a reference temperature and pressure. Filter holder is included.

NIST

 - The DF-804 Series Air Sampling Systems are designed for remote unattended continuous air sampling applications. The DF-804 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flow rate range attainable through the filter media is dependent upon the air porosity of the filter media. The DF-804 Series design accommodates rapid field service and component replacement. Flow rates are corrected to a reference temperature and pressure. Filter holder is included.

NIST

 - The model DH-30V.2 High Volume Enzyme Dust Air Sampling System incorporates a low maintenance single-phase 110VAC; 50/60Hz brushless regenerative blower and state-of-the-art microprocessor controlled electronics. It will perform measurements, automatically control flow rate, perform on-board calculations and automatically shut off the unit after a preset totalized sample volume has been collected or prescribed sampling time has elapsed. All flow rate and volume measurements are corrected to reference Temperature and Pressure. Filter holder is included.

 - The DH-604V.2 Series Air Sampling Systems are designed for remote unattended continuous air sampling applications. The DH-604V.2 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flowrate range attainable through the filter media is dependent upon the air porosity of the filter media. The DH-604V.2 Series design accommodates rapid field service and component replacement.  This model has a 102mm (4") diameter filter holder which is included.
 

 - Same as the above model except this model has an 8" x 10" (204mm x 254mm) . Filter holder is included.

 - A lightweight semi-portable environmental high volume air sampling system designed for emergency monitoring activities to determine ambient air pollutants. The unit can easily be setup in the field.  The weather resistant housing is powder-coat painted aluminum.

The DH-804V.2 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. This model has a 102mm (4") diameter filter holder which is included.