• Next Day Delivery On orders before 4pm

  • 1000s of Products in Stock Available online

  • LiveChat & Technical Support Click here to chat with us!

Order Before 4pm
For same day dispatch



  • 8303 with Standard Calibration: 0.3, 0.5 and 5.0 μm 

  • Ongoing calibration service available providing you peace of mind, the unit remains compliant according to ISO 21501-4. 

  • Remote diagnostics available

  • Users can define 'recipes' for data collection points

  • Free yearly calibration reminder service available.  Email service@connect2cleanrooms.com

Accessory Kit

  • 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 8303 Handheld Particle Counter measures 0.3 μm to 25.0 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 8303 has a mass concentration mode that approximates density in μg/m³.


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.

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

Country Of Origin: USA


How do you rate this product? *

  1 2 3 4 5
Review our Service


Question will be displayed after moderation.
A. We are offering a Buy Back Scheme at £250 on any type of particle counter that you send back to us (that is in working order), when you place an order for our Particle Counters -HAPC2 & HAPC3. Send us your old particle counter and receive £250 off the HAPC2 or HAPC3 at time of order or alternatively, place your order for a full price unit - HAPC2 or HAPC3 and receive £250 credit against your cleanroomshop.com account once the old particle counter has been returned to us.
A. Hi, thank you for your enquiry. We offer an in-house calibration service and are the only certified UK lab for Particles Plus units. Please email service@connect2cleanrooms.com detailing your calibration requirements and our team can provide you with the full details and pricing for this service.

Quality brand partners

  • DuPont logo
  • Ecolab logo
  • Particles Plus logo
  • Trucleanse Logo
  • Alpha Solway logo
  • AGMA logo
  • Vileda logo
  • Pharmig
  • Kimberly Clark Logo
  • BioClean logo
  • Hydroflex logo
  • Shield
  • Sealwise
  • Bimos
  • Wearertech logo
  • Trespa logo
  • Palbam Class logo
  • WerkSitz
  • Throna
  • FG Clean Wipes
  • Chicopee logo
  • Toffeln
  • Pal International logo
  • Portwest
  • Uvex logo
  • Synergy Health logo
  • Schulke logo
  • tackymats logo
  • Fraser Anti-Static logo
  • Teknomek logo
  • Micronova
  • Nemo Power Tools
  • Portwest

Please wait...