P611 is a compact, highly accurate and user-friendly laser particle counter or air sampler designed in accordance to ISO 14644-1 and EU GMP guidelines (compatible to JIS B9921). This handheld laser particle counter measures 6 different particle sizes and offers cumulative and differential sampling modes. Choose the particle sizes relevant to your application by selecting the type (1-4; see specifications for details) from the drop-down menu when ordering.

A USB interface allows up to 10,000 saved measurement values to be transferred from the device's internal memory to a PC for detailed analysis and long-term storage. Thus, this laser particle counter is an ideal solution for monitoring and validating ISO cleanrooms (class 5-9).

With the optional temperature and humidity probe (see accessories), two additional air parameters can be measured. 

Air Sampler P611

  • Technical specifications (select type 1-4 from drop-down menu when ordering)
    Type 1:
    Type 2:
    Type 3:
    Type 4:
    0.3; 0.5; 0.7; 1.0; 2.0 and 5.0 µm
    0.3; 0.5; 1.0; 3.0; 5.0 and 10.0 µm
    0.3; 0.5; 0.7; 1.0; 2.5 and 5.0 µm
    0.3; 0.5; 1.0; 2.5; 5.0 and 10.0 µm
    Counting rate 50% at 0.3 µm; 100% for particles > 0.45 µm
    (according to JIS)
    Limit of concentration max. 4,000,000 cnt/ft³ (141 cnt/ft³) at 5%
    loss of coincidence
    Light source Laser-diode with long durability
    Zero point rate < 1 particle / 5 minutes (according to JIS)
    Calibration < 15% at 0.5 µm (according to ISO 21501-4)
    Taking samples 2.83 l/min (0.1 cfm)
    Calibration NIST-detectable
    Sampling isokinetic sampling
    Sampling (modi) manual, automatic, ICE*1, GMP*2
    cumulative, differential, number/concentration
    Data report ISO 14644-1 and EU GMP
    Time of taking samples 1 second to 99 minutes and 59 seconds
    (adjustable)
    Frequency sampling 1 ... 1999 cycles or continuous (adjustable)
    Sample air-output internal HEPA-filter
    Vacuum source internal pump
    Interface USB
    Data storage 10,000 measurement values
    Security double-stage password protection
    Alarm numbers, low battery, discharge, laser
    Display 8.8 ca diag. (3.5 inches), 320 x 240 pixel Color LCD
    Voltage supply  15V 1A (Mini USB TYP B); 4 batteries AA
    Battery lifetime Up to 4.5 hours uninterrupted operation
    (LCD Back light, low, Ni-MH battery)
    Environmental sensors optional humidity and temperature probe
    Dimensions 178 x 90 x 47 mm (without isokinetic
    sampling or environmental probe)
    Weight 480g (without battery)
    Standards JISB9921, ISO 21501-4
    Operational conditions +5° ... +35° C
    20% ...95% relative humidity non-condensing
    Storage -20° ... +50° C
    0% ... 98% relative humidity non-condensing

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