Home > Particle Counters

Particle Counter

Particle Counter works on the principal of either light scattering or light blocking. An aerosol stream is drawn through a chamber with a light source. When a particle is illuminated by this light beam, it is redirected or absorbed. Here at Marshall Scientific we sell a wide assortment of particle counters with notable brand names such as Beckman and Met One. Please view our inventory of particle counters and feel free to give us a call or send us an email if you have any questions.

Particle Counters
Sort By:
Page of 1
Met One A2408LL Laser Particle Counter Met One A2408LL Laser Particle Counter

Met One A2408LL Laser Particle Counter Specifications

Size Channels (0.5 μm detection)

2 ch: 0.5, 5.0

4 ch: 0.5, 1.0, 5.0 , 10.0

5 ch: 0.5, 1.0, 2.0, 5.0, 10.0

6 ch: 0.5, 1.0, 2.0, 3.0, 5.0, 10.0

Flow Rate

1.0 CFM (28.3 LPM) ±10%

Flow Control

Electronic meter with rear panel adjustment

Zero Count

Less than 1 count every 5 minutes


Red LED, 7 digits

Light Source

Laser diode


Built-in printer; RS-232/RS-485 serial interface

Sample and Hold Times

1 second to 24 hours

Alarm Counts

0 to 9,999,999

Location Labels

0 to 999, appear on printout

Count Data

Total counts, counts/ft^3, counts/m^3

Data Storage

400 samples

Coincidence Loss

Less than 5% at 400,000 counts/ft^3

ISO 14644-1 Calculations

Mean of averages; standard deviation; standard error; UCL


115V, 4A, 110W

Dimensions (W x H x D)

28.4 x 15.2 x 45.7 cm (11.2 x 6 x 18 in)

Our Price: $920.00
Beckman Z2 Particle Counter Beckman Z2 Particle Counter

Beckman Z2 Particle Counter Specifications

Operating Temperature

10° to 35°C

Relative Humidity

10% to 85% without condensation

Electrolyte Solution

Aqueous: 1% to 5% sodium chloride,

Particle Size

Each size of aperture allows the measurement of particles in the approximate diameter range of 2% to 60% of the aperture diameter. 1µm to 120µm equivalent spherical diameter (depending on the aperture size).

Particle Count Accuracy

Within ± 1% of a reference counter system.

Particle Count Precision

Better than 1% CV at metered volumes 0.5mL and 1.0mL.

Better than 2% CV at metered volume of 0.1mL.


The displayed pulse height range is divided into 100 Threshold Units (100% equals full scale). Each threshold (i.e. Lower and Upper) is resolvable and selectable in 0.1 unit increments.

Accuracy of ±0.2% full scale.

Aperture Tube Sizes

Standard Aspect Ratio: 50µm, 70µm, 100µm, 140µm, 200µm

Ampoule Insertable Style: 50µm, 70µm, 100µm

Metering Volumes

0.1mL, 0.5mL, 1.0mL

Our Price: $5,995.00