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Contents The Universal Air Sampling Pump....................................................................................................................... 1 The I.O.M. Sampler............................................................................................................................................ 2 Inhalable Dust Sampling using the I.O.M. Sampler..............................................................................................
The Universal Air Sampling Pump LCD display Air inlet hosetail Inlet filter housing Keypad Inlet filter Inlet filter O ring Filter housing screws Accessory mounting screws Keypad cover Keypad cover screw Flow indicator* Flow adjust screw *The flow indicator is for use only to identify changing flow conditions during sampling, such as a reduction in flow caused by a crimped tube. It must not be used to calibrate the sample flow rate.
The I.O.M. Sampler* IMPORTANT The I.O.M. cassette and filter paper combined must be pre and post weighed together for an accurate inhalable result The I.O.M. sampler is designed and closely adheres to the definition for inhalable dust given in EN481 I.O.M. - what does it stand for? The "Institute of Occupational Medicine". Based in Edinburgh, researchers at the Institute developed this sampler to overcome some of the difficulties encountered with other sampling devices.
Inhalable Dust Sampling using the I.O.M. Sampler For information on using the I.O.M. sampler for respirable dust fractions please contact SKC customer support on +44 (0) 1258 480188 Inhalable dust is taken to mean any solid particle which by its small size can be carried in an airflow or remains airborne. It includes the thoracic and respirable dust fractions. The inhalable dust fraction size is defined in the standard EN481. More information is also given in SKC’s Basic Step By Step Guide (224-G1).
Inhalable Dust Sampling using the I.O.M. Sampler type rotameter is usually marked with a number of dots. The dots give indication that the float is spinning in the airflow, thus showing that it is not touching the walls of the rotameter tube which could affect the accuracy of the reading. Note that the rotameter must be placed onto a flat, level surface to ensure that the float does not touch the sides of the rotameter tube. 25 20 with the calidaptor to connect the calidaptor to the rotameter. Fit the I.
Inhalable Dust Sampling using the I.O.M. Sampler result. The I.O.M. sampler complete with the new filter should now be fitted with the cassette cover supplied, and is ready to take into the workplace. cover and switch on the pump. IMPORTANT: The start time of the sample should be noted. New filter for sample Filter used for calibration 8. Mount the sample train (comprising the sample pump, tubing and I.O.M. sampler) onto the worker who is to wear it during the sample. The I.O.M.
Respirable Dust Sampling using the Cyclone Sampler Respirable dust is taken to be solid particles which, because of their extremely small size, can be drawn deep into the lungs, and are not ejected by the normal means of breathing out, coughing or travelling out in the lung mucus. It is because of this ability to stay in the body that it is considered to be dangerous. Dust of this small size is normally invisible to the human eye. The respirable dust fraction size is defined in the standard EN481.
Respirable Dust Sampling using the Cyclone Sampler fitted to the bottom of the cyclone sampler. Air Outlet 3. Connect the top tubing connector (air outlet) on the cyclone sampler to the inlet hosetail on the right hand side of the sample pump using the length of flexible tubing. Retaining Ring Sampler Top Filter Cassette Air Inlet 4. To set the flow rate required, in this case 2.2 litre/minute, a flow calibration device such as a Defender primary calibrator or a rotameter should be used.
Respirable Dust Sampling using the Cyclone Sampler tubing. Turn on the Defender primary calibrator and set it to take continuous flow readings. the required level. It is advisable to do this as quickly as possible to minimise the chance of collecting anything that may affect the final result. The cyclone sampler is now ready to take into the workplace. New filter for sample 6.
Respirable Dust Sampling using the Cyclone Sampler Once the pump is mounted on the worker in a satisfactory way it can be switched on. IMPORTANT: The start time of the sample should be noted. 10. At the end of the sample switch the pump off and note the finish time of the sample. Remove the sample train from the worker, and once away from the sample location re-check the flow rate of the sample pump (as per MDHS14/3).
Gas & Vapour Sampling using Sorbent Tubes • Tube adaptor for small diameter sorbent tubes (SKC You will need :- • Universal sample pump (fully charged) • Low flow adaptor (tube holder) • Tube cover of appropriate size for the sorbent tube being used • A length of flexible tubing • Two sorbent tubes from the same box or batch • Flow calibration device capable of measuring the intended flow rate, typically between 5 and 500 ml/ min, such as the Defender primary calibrator • Toolkit to adjust the flow ra
Gas & Vapour Sampling using Sorbent Tubes breaker (such as SKC part no. 800-01200). Take care handling the tube as the broken ends are extremely sharp. Fit the sorbent tube into the short black hose of the low flow adaptor. One of the red plastic caps provided can be used to seal the sorbent tube until the sample is taken, however please note that the cap should not be pressed on too far as they are designed to provide an airtight seal for transportation.
Gas & Vapour Sampling using Sorbent Tubes 7. At the end of the sample switch the pump off and note the finish time of the sample. Remove the sample train from the worker, and once away from the sample location re-check the tube flow rate. Ensure that the flow rate check is carried out as quickly as possible to minimise the chance of collecting anything that may affect the final result.
Gas & Vapour Sampling using Impingers Impingers are typically run at a low flow rate of 1.0 litre/minute. It must first be decided if you are going to carry out personal or static sampling. If personal sampling is the method adopted you will require an impinger pouch and an in-line trap. If static sampling is more suited an impinger bracket and glass trap should be used.
Gas & Vapour Sampling using Impingers (Connect from the impinger to the in-line trap with a length of flexible tubing. It does not matter which way around the in-line trap is connected). 3. Fasten the bracket to the front of the Universal pump using the two screws supplied with the pump. Place the trap and the impinger into the bracket. (Place the impinger and in-line trap on a suitable surface). 4.
Bag Sampling using the Universal Pump Where there is a need for the sample not to come into contact with the pump or where the atmosphere may be aggressive (as found with stack sampling) a method of collection using an intermediate vessel is recommended. The intermediate vessel can be any container of adequate size that is air tight. For example, the SKC Vac-UChamber. Some people use large Tupperware containers if the bags are small, but any air tight vessel, metal, plastic or otherwise can be used.
Duct Sampling for Volatile Organic Compounds Unlike dust sampling from a stack, there is currently NO requirement to carry out this type of monitoring under 'isokinetic' conditions as detailed in the standards BS 3405 and BS 893 on stack dust sampling. The simplest way to sample for volatile organic compounds (VOC's) is to use sorbent tubes with a slight adaptation of the method used in occupational hygiene.
The Sample Train The sample ''train'' is the name given to the combination of a pump, flexible tube and sampling device when connected together. It does not matter what kind of sampling device is attached to the pump as there are no specific terms for individual setups. The figures below give examples of sampling trains. Additionally the figure on the right illustrates the sample train during the process of calibration.
224-G3 Issue C July 2009 Specialists in Air Sampling Technologies SKC Limited 11 Sunrise Park, Higher Shaftesbury Road, Blandford Forum, Dorset DT11 8ST United Kingdom T: +44 (0) 1258 480188 F: +44 (0) 1258 480184 E: info@skcltd.com W: www.skcltd.
