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Thermal Desorption Low Flow Air Sampling Pump

Personal Air Sampling Pump
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  • Designed for Air Sampling thru SIS Desorption Tubes
  • Ultra compact size
  • Ultra low flow 5 - 200 cc/min
  • Back Pressure to 25" of H2O
  • LCD clock display
  • Fault Flow Indicator
  • RFI shielding case
  • UL and OSHA approved
  • One year warranty
  • Adaptor fitting for SIS Thermal Desorption Tubes
  • Flow fault indication LED
  • Battery check LED
  • Belt clip
  • Dual filtration system
  • External flow adjust
  • Intrinsic safety


The LFS-113 provides for constant flows between 5 to 200 mL/min at variable back pressures up to 25" of H2O for use in pumping air or gas samples through the S.I.S. Short Path Thermal Desorption Sampling Tubes. Flows are adjustable via an external flow adjustment, and once sampling begins flow remains constant over variable back pressure from 0 to greater than 25 inches of H2O. An adaptor fitting and hose for SPTD tubes and a battery charger is included with the Air Sampling Pump Kit.

Sampling Pump

Low flow - dual modes

The LFS is an ultra low flow sampler designed for air sampling on the SIS Thermal Desorption Sample Tubes.

Constant flow mode sampling

Ideal for single or "in-series" tube sampling providing constant flow rates from 5cc to 200 cc/min. The flow is adjusted through the sampler with an adjust flow screw.

The pump will automatically maintain the flow set over the constant flow range at back pressures up to 25" H2O.

External flow adjust

Externally adjustable flow control valve, settable over the full range of the flow.

Flow fault indication LED

A latching fault function is standard on all LFS-113 samplers. An LED fault indicator will light if the unit is operated outside its performance range. If the fault is not corrected within approximately 30 seconds, the pump will shut off and the LED will remain lit. The time will lock and display the time at which the fault occurred, ensuring a valid sample. If the fault condition is cleared, the LED will extinquish and the unit will continue to operate normally.

Battery check LED

When the unit is turned on, an LED indicator signals to show that the battery will provide a minimum of eight hours service over the operating range.

Rechargeable battery pack

The LFS has a rechargeable battery pack system which makes it completely portable. Battery packs are recharged via a standard 120V charger.

Dual filtration system

The dual filtration system provides an internal pump filter providing a needed backup to prevent destructive gas and moisture vapors from entering and damaging the sampler. The inlet filter is easily unscrewed and filters replaced for preventive maintenance protection.

Intrinsic safety

UL approval for use in hazardous locations Class I Groups A,B, C, D, Class II Groups E, F, G, and Class III for explosive gas and dust atmospheres.


The LFS sampler is guaranteed for one year against defects in parts and/or workmanship.

Elapsed time clock

A time elapsed clock provides for accurate timing and valid sampling data. If the unit should fault, the clock will latch the time and indicate on the display. When the fault is cleared the sampler may be re-started and the clock will begin a new timing sequence.

RFI shielding case

This sampler is provided with an EMI-RFI shielded case to dissipate electromagnetic and radio frequency interference, protecting the pump electronics and ensuring valid sampling data. Pumps have been designed to dissipate EMI between 13.5 MHz and 495 MHz at the exposure level set by ANSI C95. 1-1982.


Operating range 5-200 cc/min, back pressure to 25" H2O
Pressure rangeBack Pressure up to 25" H2O
Flow control ±5% of set point.
Battery SystemRechargeable, plug in, 4.8V 500 MAH NiCad battery pack. Designed to meet all UL requirements. Internal charging external charging with adapter)
Size 2-1/2" W x 1-3/8" H x 4-5/8" L
Weight 12 ounces
TemperatureOperating: -20 °C to 45 °C
Storage: -40 ° to 45 °C
Charging: 5 ° to 45 °C
Part No. Description ID (in)OD (in) Quantity
In Stock
UOM Price Order
914000 Model LFS-113 Air Sampling Pump 3ft of tubing includes Battery pack, battery charger, and adaptor fitting #781010 0*Standard lead-time for non-stock items is approximately two weeks depending on the item. EA$1364.00
800086 Replacement Battery Pack ------ DISCONTINUEDEA------
800093 Replacement Filter Kit, Pkg of 3 ------ DISCONTINUEDPK------
316TT Heavy Wall Tygon Vacuum Tubing, (price per foot) 3/169/16 DISCONTINUEDFoot ---10 or more: 10% off; 100 or more: 27% off.---
781010 S.S. Desorption Tube Hose Connector ------ 4EA$44.00
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