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SidePak Personal Sampling Pump SP350


Product Details

This unit has been discontinued as of January 1, 2010.

The 5 L/min SidePak™ Model SP350 Personal Sampling Pump is a rugged, lightweight pump weighing as little as 16 oz. The SP350 features TSI's Smart Battery Management System™ for precise run time information in minutes remaining. The SP350 is available with long-running NiMH or alkaline battery packs.

The SidePak SP350 is intrinsically safe and is ideal for the sampling of aerosols, gases and vapors in hazardous environments.

Features and Benefits

  • TSI's Smart Battery Management System for precise run time information in minutes remaining
  • Multiple battery options including 1650 mAH or 2700 mAH NiMH battery packs or a 6-cell, AA-size battery pack
  • Pre-program sample time and delay start
  • Built-in run time clock provides sample time information
  • Flow block detection with auto-restart
  • Sampling accessories and replacement parts available
  • Intrinsically safe (CSA Approval) for use in hazardousenvironments
  • Available in single-, 3- and 5-unit kits


  • Personal exposure monitoring/IH studies
  • Ambient/work area monitoring
  • Environmental sampling
  • Epidemiology health studies
  • Engineering studies

Included Items

  • Sampling pumps
  • Batttery packs
  • Power supplies
  • Carry cases
  • Screwdriver
  • Certificate of conformity
  • User guide


  • Are they accurate?
    The flow meters are temperature compensated and pressure corrected to give accurate volumetric flow rates. A NIST traceable certificate of calibration accompanies all calibrators.
  • Are they SidePak pumps easy to use?
    Turn them on, attach a pump and you have a continuous real-time reading of flow rate. They are very portable, lightweight and respond quickly to air flow making real-time adjustments during the calibration of sampling pumps.
  • Can I use an AC adapter for longer operation?
    Yes. Contact TSI for more information.
  • Can I use rechargeable batteries?
    Yes, but it will cost some expected operating life. Rechargeables will typically last one-half to two-thirds as long as alkaline batteries.
  • Do ambient temperature extremes affect the accuracy of the calibrator?
    The flow measurement of calibrators will be affected somewhat over a range of ambient temperatures. The following chart defines accuracy based on performance and temperature.  
  • Is real-time important?
    Saves a great deal of time and money by being able to set flow rates or make corrective adjustments without having to wait for a measurement.
  • Is the calibrator based on a primary standard?
    By definition, a primary standard is one whose value is without relation or comparison to any other reference. There are three primary standards, mass, length and time.  There is no primary standard for air flow rate since the measurement is dependent on mass, length and time. Hence, all air flow calibrators are secondary standards in the strictest sense of the definition. In the industrial hygiene arena, the terms “primary” and “secondary” have become generally accepted terms over time and should not be confused with actual primary and secondary standards as prescribed by the National Institute of Science and Technology (NIST).  Some manufacturers of pump calibrators, by their own definition, refer to their products as “primary” standards referring to the manner they are applied and generally accepted for use in the industry. Other manufacturers adequately refer to their instruments as “calibrators”. There are no industry standards established for such designations based on the measurement technology being employed.
  • Is the TSI sampling pump calibrator a “primary calibrator”?
     The accuracy in determining exposure to various physical and chemical substances is based on the accuracy of the air volume sampled. Therefore, sampling pumps must be adjusted, calibrated and routinely checked to ensure the accuracy of the flow rate. The frequency of calibration depends on the use, care and handling to which the pump is subjected. Ordinarily, pumps should be calibrated before use in the field and after each field survey. In the NIOSH Manual of Analytical Methods, Chapter D addresses GENERAL CONSIDERATION FOR SAMPLING AIRBORNE CONTAMINANTS. Section 7, deals with Sampling and Calibration Techniques and Part a. of Section 7 refers to the Calibration of Personal Sampling Pumps.In this section, NIOSH recommends reference instrument technology considered acceptable to perform sampling pump calibration. They cite commercially available primary calibrators that include utilization of the following measurement technologies: Electronic soap bubble meters Dry-cellMass-flowWet-testDry-gas Whatever choice of reference instrument used, base adjustment at the point of manufacture and during factory service of any calibration device should be NIST traceable. 
  • What are they used for?
    Field calibration or verification of sample pumps used for exposure monitoring and active air sampling instuments. Allows real-time adjustments in the flowrate of sampling pumps.
  • What are they?
    They are battery (or AC adapter) powered Mass Flowmeters.
  • What batteries does it take and how long will they run?
    The battery pack uses 6 – AA size batteries and alkaline batteries are provided. The estimated life of alkaline batteries is 20 hours.
  • What is the performance?
    The model 4146 has a measurement range of 0.01 to 20 L/min ±2% of reading or 0.005 L/min, whichever is greater. This is suitable for all personal sampling pumps on the market and smaller area sampling pumps.The model 4046 has a measurement range of 2.5 to 300 L/min ±2% of reading or 0.05 lpm, whichever is greater.
  • What is the recommended service interval for Pump Calibrators?
    TSI recommends annual factory maintenance and recalibration for accurate and reliable operation.
  • Where can I buy them?
    Representatives are listed on our Representative/Distributor page or you can contact us by e-mail at for information on the nearest distributor.
  • Who uses them?
    Industrial HygienistsSafety EngineersEnvironmental Testing ProfessionalsConsultantsEpidemiologists
  • Why are they used?
    Most operational protocol for personal sampling requires pump flow to be set and documented before sampling begins and again checked and documented when a sampling cycle is completed. Periodic verification checks during sampling can also easily be conducted with the battery operated portable calibrators.

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