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BDX-II Air Sampling Pump

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The Gilian BDX-II is an economical air sampling pump designed specifically for abatement and lead applications.

The Gilian BDX-II Air Sampling Pump is an economical air sampling pump designed specifically for abatement and lead applications. It is a compact and rugged air sampling pump optimized for sample methods between 500 cc/min and 3000 cc/min. The BDX-II is powered by a rechargeable NiMH battery that provides up to 10 hours of operation on a single charge.

  • 500-3000 cc/min
  • Anti-tamper control covers
  • Sealed internal components
  • Rechargeable NiMH battery pack
  • Easy calibration
  • UL approved for operation in hazardous areas 

Rugged and dependable construction of the BDX-II will withstand the toughest industrial environments. Without sacrificing accuracy and reliability, the BDX-II provides an economical alternative to higher-priced constant flow air sampling pumps.

The built-in rotameter monitors flow rates over the entire flow range of 0.5 - 3.0 LPM and an electronic flow control adjustment enables parts to last longer so maintenance is minimized. The rechargeable NiMH battery provides approximately 10 hours of reliable operation on a single charge and easily detaches from the pump body for recharging and/or quick field change in non-hazardous locations. Sealed flow adjustment and on/off switch protects the BDX-II from moisture, dust and fibers. 

The BDX-II has a filter that protects the internal pneumatics from dirt and debris. This filter is externally mounted, enabling users to quickly and easily inspect filter condition and when necessary replace the filter. 

BDX-II air sampling pumps accurately monitor for asbestos using the NIOSH Method 7400 or the OSHA reference sampling method. The pumps also monitor for lead using NIOSH Methods 7082, 7105 or 7300. 

Compact, lightweight and rugged; the BDX-II takes the complexity out of abatement sampling.

More Information
Brand Sensidyne LP
Air Filtration Tool Type Air Sampling Pump
Battery Type NiMH Battery Pack
Operation 500-3000 cc/min
Equipment Features Rechargeable battery
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Before using the BDXII for sampling, the unit must be properly prepared. This includes charging and calibrating the unit for proper flow rate. When charging the unit make certain that the unit is fully charged. This provides the unit with enough charge to complete a full period of sampling.

CAUTION: When charging the device, make certain the AC outlet is nearby and readily accessible.
The BDXII should be calibrated before and after each day of sampling. Calibration should be performed using either an electronic bubble meter (e.g., Gilibrator-2), or a precision rotameter that has been calibrated against an electronic bubble meter.
When a sampling train requires the use of an unusual combination of sampling media (such as a glass fiber filter preceding an impinger), these sampling media should be installed in-line during calibration.


To ensure proper operation of the BDXII Abatement Air Sampling Pump, the unit should be properly calibrated prior to sampling. The calibration (flow adjust) is recommended using a Gilibrator-2 precision electronic flowmeter. If you use a precision bubble meter other than the Gilibrator-2, make certain you follow the instructions that came with your device.

  1. Make certain the unit is properly charged.
  2. Using a small Phillips screwdriver, back out the holding screw just enough so the anti tamper cover plate can be rotated 180. This exposes the On/Off switch and the flow adjust screw.
  3. Assemble the cassette filter holder for the sampling media. Use the appropriate filter for the sampling method. Compress the cassette by using a mechanical press or other means of applying pressure. Use shrink tape around the cassette to cover joints and prevent leakage. If a cassette adapter is used, make certain it does not come in contact with the backup pad.
  4. Move the On/Off switch to the On position.
  5. Set the pump flow rate by turning the flow adjust screw (clockwise for increased flow and counterclockwise for decreased flow).
  6. Use the built-in rotameter on the BDXII as a flow indicator only. Accurate flow adjustment settings must be made by using a Gilibrator-2, or equivalent flow calibration device, for calibration measurements.
  7. When calibrating the sampler for flow, the sample collection (i.e. a filter cassette) should be in-line.
  8. When the desired flow rate has been attained, move the On/Off switch to the Off position. The unit is now ready for sample collection.


Begin the sample run by switching the On/Off switch to the On position. Secure the front antitamper cover. The pump will operate at the flow rate set at the last calibration (flow adjustment). The sampling run is terminated by moving the On/Off switch to the Off position.

NOTE:  It may be necessary to readjust the flow rate at least 2 times during the sampling period in order to maintain flow within 5% of the set flow rate.

After sampling, remove the filter cassette and prepare the cassette filter for analysis. Replace the cassette filter with a clean fresh filter.
Fully charge the battery pack (preferably overnight) to ensure enough power to complete the entire next sampling period. The actual time to achieve a fully charged battery pack depends on the charging device used.



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