PM2.5 Sampling Procedures
For PM2.5 sampling the following changes must be made to the filter holder:

• Ensure that the multiple impactor adapter with the PM10 impactor (silver) is installed on top of the preseparator assembly, while the PM2.5 impactor (gold) is installed in the preseparator assembly.

• Clean and lubricate the EMT (Easy Maintenance Target) every 5 sampling periods. The EMT may need to be cleaned more or less frequently depending on the degree of soiling.

• After the sampler has been assembled, calibrated, verified to be in proper working order, and a filter loaded in the filter holder assembly, set flow rate adjustment in accordance with procedures as shown in the Operation Manual.

• Follow all other procedures in the Operation Manual, noting that PM2.5 is being sampled rather than PM10 and TSP.

PM10 Sampling Procedures
For PM10 sampling, follow the steps below:

• Ensure that the PM10 impactor (silver) is installed in the preseparator assembly. The multiple impactor adaptor is not needed, nor is the PM2.5 impactor (gold).

• Clean and lubricate the EMT (Easy Maintenance Target) every 5 sampling periods. The EMT may need to be cleaned more or less frequently depending on the degree of soiling.

• After the sampler has been assembled, calibrated, verified to be in proper working order, and a filter loaded in the filter holder assembly, set flow rate adjustment in accordance with procedures as shown in the Operation Manual.

• Follow all other procedures in the Operation Manual, noting that PM10 is being sampled.

TSP Sampling Procedures
For TSP sampling, the following changes must be made to the filter holder:

• Remove the impactor(s) from the preseparator assembly and multiple impactor adapter; remove the adapter.

• Clean the cap and preseparator assembly every 5 sampling periods, or more frequently if soiling is observed.

• After the sampler has been assembled, calibrated, verified to be in proper working order, and a filter loaded in the filter holder assembly, set flow rate adjustment in accordance with procedures as shown in the Operation Manual.

• Follow all other procedures in the Operation Manual, noting that TSP is being sampled.

Pump
•	Double-diaphragm with laminar flow valve technology
•	Rated for 10,000 hours continuous operation
•	Ironless core motor with precious metal commutation
•	Flow range 0-10 LPM
Physical
•	Polypropylene copolymer weatherproof sampler case
•	Dimensions: 10" x 12" x 7"
•	Weight: less than 10 lbs. fully configured
•	All in one transport case
•	Dimensions: 19.75" x 12" x 18"
•	Weight: less than 40 lbs. with all accessories
Timer
•	Programmable 7-day timer with battery backup
•	Up to six sample periods per day
Pre-separator/Cassette Filter Holder Assembly
•	Non-directional louvered inlet design
•	Easily removed for cleaning
•	Standard 47mm filter holder
•	Nominal 10 micron or 2.5 micron "cut-point" at 5 liters/minute sample rate
Electronics
•	Constant flow control circuit
•	AC or DC operation
•	Variable flow adjustment
•	Elapsed time totalizer
•	Low battery indicator and shut-off
•	Low flow rate indicator and shutoff
Battery Pack
•	Litium Ion batteries
•	14.8V / 118 Watt Hours
•	1.2 amp external battery charger
•	Full recharge in less than 6 hours

Impactor Grease
The EMT (Easy Maintenance Impactor) should be cleaned and re-greased after every fifth run or more often if heavy soiling is observed. Airmetrics offers a 60gm tube of Glisseal Ht impactor grease.

Tedlar Bags
Original MiniVol™ samplers with gas ability feature six liter Tedlar bags in their collection canisters. Manufactured at Airmetrics, the bags can become damaged during repeated sampling use and may need replacement.

Filters
For particulate sampling, the MiniVol™ uses 47mm filters to collect particulate matter. Filters should be weighed pre- and post-exposure with a microbalance accurate to one microgram. Airmetrics offers the following types of filters:

• Fiber Film Filter - Teflon-coated glass, ideal for gravimetric analysis
  • Pure Quartz Filter - Recommended if chemical analysis for carbon based compounds will follow gravimetric analysis
    • Pure Teflon Filter - Recommended if chemical analysis for non-carbon based compounds will follow gravimetric analysis

    To complement use of the MiniVol™ samplers, Airmetrics also offers filter weighing services.

    Petrislides
    Petrislides, plastic cassettes for shipping and storage of filters, are offered by Airmetrics in conjunction with the above filters.

    Telescoping Hoisting Pole for Lifting Samplers
    This pole allows the user to lift the sampler from the ground to its sampling site, up to 10 feet above ground. Siting the sampler can thus occur without using a ladder.

    Tripod Assembly for Remote Locations
    The tripod assembly allows the user to site the sampler in remote areas or on roof tops where no other mounting equipment exists.

    Sampler Features
    The Standard PM-2.5 MiniVol™ TAS includes:

    • 1 Pump Module
      • 2 PM-2.5 Impactors
        • 2 PM-10 Impactors
          • 2 Multiple Impactor Adapters
            • 2 Louvered Inlets
              • 2 Filter Holder Assemblies
                • 2 Li-ion Battery Packs
                  • 1 Battery Charger
                    • 1 Universal Mounting Bracket
                      • 1 All-Weather Transport Case
                      Rental MiniVol™ TAS Services
                      Airmetrics owns and maintains a small fleet of rental samplers for consultant use or for new customers to get acquainted with the MiniVol™ TAS. Rental samplers are available on a first-come/first-serve basis with a one-month minimum rental required. Contact Airmetrics for pricing.
                      
                      

                      Calibration Services
                      Airmetrics also offers Calibration Services for purchased MiniVols, FRM orifices, and the MiniFlow orifice (used to calibrate the MiniVol™). Airmetrics can also calibrate other flow auditing devices. All calibrated equipment comes with a calibration curve traceable to NIST. Contact Airmetrics for pricing.

                      Filter Weighing Services
                      In addition to supplying consumables and accessories for sampler use, Airmetrics offers a 47mm Filter Weighing Service to complement use of the MiniVol™ TAS and other types of air sampling equipment. We carry three types of filters (Fiber Film, Pure Quartz, and Pure Teflon; others may be special ordered), Contact Airmetrics for pricing.

                      Calibration and Auditing Procedures
                      Before a monitoring program is undertaken, all sampling and analysis equipment must be properly calibrated. Careful, accurate calibrations of sampling instrumentation and associated equipment provide the backbone for any monitoring network. Performing periodic audits is a way to ensure the integrity and assess the accuracy of sampling data.

                      The following presents calibration and auditing procedures specific to the MiniVol sampler, which is designed to operate at an actual total flow of 5.0 liters per minute (L/min), and the MiniFlo transfer standard, calibrated over the appropriate flow range.

                      Field Calibration Kits
                      Each kit includes a digital or analog manometer, one calibration orifice, a louvered inlet, tubing, a sturdy all-weather case and a calibration curve traceable to NIST.
                      
                      Calibration Orifices
                      Available for either FRM equipment or MiniVol™ samplers, the orifices are ideal for either initial calibrations or field audits.
                       

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