Particles Plus 8503 3 channel handheld particle counter


  • Handheld laser particle counter
  • 12 months calibration, meets ISO 21501-4
  • 10% discount from your first annual calibration with Cleanroomshop
  • Tripod, case, accessory kit included
  • 10.5 hours battery, supporting non-stop production from a single charge
  • View data on screen or export via USB and ethernet
  • Accurate, user friendly, easy to configure
  • 3 user-selectable channels, 0.5–25µm, calibrated at 0.5, 1.0, 5.0µm
  • Large 4.3" touch screen colour display
  • 1 year warranty (6 months for internal pumps)
  • 0.1 CFM (2.83 LPM) flow rate
  • Particles Plus code: HH-8503

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In stock

From £330.00

To £3,199.29

Fast Delivery view delivery details

We Offer Same Day Despatch on all stock items, Monday - Friday on orders placed before 16:00 GMT. Next day delivery is available to certain shipping Destinations.

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handheld particle counter Particles Plus 8503 3 channel portable cleanroom Particle Counter
Particles Plus 8503 3 channel handheld particle counter

In stock


    • Factory calibrated at 0.5, 1.0, 5.0 µm
    • Ongoing calibration service available providing you peace of mind, the unit remains compliant according to ISO 21501-4. 
    • Remote diagnostics available
    • Efficient functionality to save time with easy to configure formula’s, date extract and also being able to download data whilst continuing to take particle counts
    • Easy to configure and record different sizes of micron confirming HEPA filtration maintains performance to agreed classification.
    • Users can define 'recipes' for data collection points
    • Free yearly calibration reminder service available.  Email

    Calibration Offer

    Connect 2 Cleanrooms has the only UK-based Particles Plus calibration laboratory. Ongoing calibration will ensure the unit is trusted to perform accurately and remains compliant to ISO 21501-4. 

    We can offer you a 10% discount on your first annual calibration, when booked within 30 days of purchase. Please email for more details. 

    Free yearly calibration reminder service available. Contact us about our particle counter rental service.

    Accessory Kit (included)

    • Isoprobe Threaded 0.1 CFM (2.83 LPM) Nickel Plated Aluminum
    • Purge Filter Assembly 0.1 CFM (2.83 LPM)
    • Rechargeable Battery 55Wh - Greater than 10 hour battery life
    • Power Supply 15V ~2amp 100-240VAC (Select adapter -US, -EU, -UK or -CN)
    • USB Cable 6' (1.8m)
    • Calibration Certificate
    • Quick Start Guide
    • Carry case included
    • User Manual and Instrument Management Software (USB Key)
    • Supplied with UK plug (US, EU, CN optional – please enquire)

    Why Choose 8503 3 Channel Handheld Particle Counter?

    • Pinpoints contamination sources quickly with visual and audible indicators via the patented, real time meter.
    • IP addressable, network capable, operation.
    • Icon driven touch screen interface.
    • The Particles Plus 8503 Handheld Particle Counter measures 0.5 μm to 25.0 μm (factory calibrated at 0.5, 1.0, 5.0 µm) with a flow rate of 0.1 CFM (2.83 LPM).
    • Easy to configure, this instrument displays up to 3 size channels as well as (optional) temperature and relative humidity. 
    • View data and generate ISO 14644-1, EU GMP Annex 1 or FS 209E reports. 
    • Export to Particles Plus data-download software or USB key. 
    • Particles Plus counters can be controlled and monitored remotely via web browser. 
    • The 8503 has a mass concentration mode that approximates density in μg/m³.

    *Free  demo session subject to availability - please enquire for details.

    Special Delivery Details

    Particle counters require calibration in our calibration lab before they can be shipped. If you require your particle counter on next-day delivery, please place your order by 12noon to ensure calibration can be completed same-day.
    More Information
    Brand Particles Plus
    Type Handheld
    Lead time (if out of stock) 10-15 days
    Pack Size 1
    Applications For cleanroom monitoring through airborne particle counting the 6 channel particle counter is easy to use, with versatile output options.
    Technical data Most advanced multi-processor on the market for simultaneous operations
    Greater than 10 hour battery life with idle mode
    8503 with Standard Calibration: 0.5, 1.0 and 5.0 ?m
    Custom size calibration (optional extra - please enquire)
    New Instant Management Software (IMS). Able to download to PC, remote diagnostics, sensor calibration and real time data
    Ethernet, optional WiFi, MODBUS ASCII od TCP
    Hard plastic enclosure
    Sterility Non-Sterile
    Warranty 2 year warranty (6 months warranty only for the internal pumps)
    Channel 3 Channel
    Calibration Units are supplied calibratied and ongoing yearly calibration is available from Cleanroomshop's in -house lab. 10% off your first calibration with every purchase.
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    Delivery and returns

    We offer same day despatch on all stock items, Monday to Friday, with no minimum or maximum quantity.

    Please note that the cut off point for same day despatch for stock items is before 16:00. If you place your order after this time and need your goods urgently, please give us a call and we’ll see what we can do.

    Typically orders received after 16:00 will be despatched the following working day, providing goods are in stock.


    Weight (KG) Next day before 17.30pm* Next day before noon Next day before 10.30am
    1 - 20 £9.99 £13.50 £21.00
    21+ +£0.36 per extra kg +£0.44 per extra kg +£0.48 per extra kg

    *Please note that the 'Next day before 17.30pm' delivery can be made any time between 7.30am and 17.30pm.

    OTHER UK ZONE DELIVERIES & international

    We offer a range of delivery methods for countries outside of Mainland UK, for Northern Scotland, Northern Ireland, Isle of Man & Scilly Isles & Channel Islands. We also offer International Delivery for 50+ countries.

    For more information about our delivery options and pricing click here

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