Environmental Laboratory

  • UKAS Air Sampler Flow Calibration

UKAS Air Sampler Flow Calibration

May 08 2019 Read 301 Times

Involved with air sampling regulatory or compliance measurements to OSHA, NIOSH, ASTM, ARCA, CAR 2012 or HSG 248 standards then you should be gaining UKAS accredited calibrations for your master air flow sampling system. Regular UKAS accredited calibration of your air sampler system whether this be a flowmeter, flow calibrator or pump will ensure your sampling system remains compliant and accurate. All air sampler flow calibrations whether this be your working flowmeters or master flowmeters should have a complete line of traceability from a UKAS accredited calibration laboratory with a flow measurement uncertainty analysis to include in your overall measurement uncertainty budget. During calibration the air sampler flow rate is checked to ensure the volume flow rate of air is consistent with the instrument specification and upon completions a detailed certificate of calibration is issued inline with ISO/IEC 17025.

Air Sampling Methods and Procedures

Air sampling in practice draws a known volume of air through a sampling medium using a sampling pump and meter and is vital to any environmental monitoring program. For sampling of particulates, fumes, dust, trace metals and pollen the medium is generally a filter paper, as these contaminants are of solid material in the around µm to mm range, as anything larger would be too heavy to remain on the air and would fall to the ground. Sampling flow rates range from 50 ml/min up to 40 l/sec for high volume sampling. Sampling for gases, solvents and vapours instead of using a filter papers, or sometimes in addition would use a sorbent tube or impinger method, where sampling flow rate are much lower in the order of 10 – 100 ml/min. Calibration procedures, methods and sampling flowrates are specified in each standard such as NIOSH, EPA, HSG 248, OSHA, AHERA, ISO 13137 and MDHS, along with the calibration intervals for working flowmeters and master flowmeters. Personal sampling pumps must adhere to ISO 13137:2013 and are generally battery operated and bodily worn with the sampling inlet positioned in a manner which reflects the users' airborne environment and they must also comply to the standard specification for flow stability and pulsation limits. Flow calibration of the sampling pump system is completed before and after every sample run to calculate the average sample volume. This system calibration is generally completed by the user with a suitable UKAS accredited calibrated reference flowmeter.


  • Dust Sampling
  • Coal Mine Dust
  • Asbestos
  • Toxic Gases
  • Vapour Sampling
  • Impinger Sampling
  • Isokinetic
  • Pollen Sampling
  • Trace Metals
  • Particulate
  • PM-10 PM-2.5
  • Cleanrooms
  • Roadside
  • Atmospheric
  • Microbiological
  • ISO 13137


  • SKC Air Samplers Pumps
  • FJ Speciality
  • Gilian Gilair
  • JS Holdings
  • Casella
  • AP Buck
  • Turnkey
  • Airbox Variflow
  • Tisch
  • Zefon
  • Wagtech
  • Microsensor
  • TSI
  • Escort
  • Hi-Q Environmental

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment

Digital Edition

International Environmental Technology Buyers Directory 2019

August 2019

A Comprehensive Bibliography of Who’s Who in Environmental Analysis & Monitoring This guide has been produced as a reference of manufacturers and suppliers with their full contact details. The c...

View all digital editions


World Water Week 2019

Aug 25 2019 Stockholm, Sweden

Sensor China

Sep 02 2019 Shanghai, China

Aquatech Mexico

Sep 03 2019 Mexico City, Mexico


Sep 04 2019 Gwangju, South Korea

NSC Congress & Expo

Sep 06 2019 San Diego, CA, USA

View all events