Beckman Coulter Multisizer 4 Particle Counter, Operating Temperature 5°C to 40°C, Beckman Coulter (CAT#: STEM-AIAEPO-0197-LGZ)

Increased dynamic range over MS3
MS3 resolution increased
QA Friendly
Digital Pulse Processor (DPP)
Dynamic dimension measurement
Provides number, volume, mass and surface area size distributions in one measurement
V-Check (IQ, OQ, PQ) instrument verification
The Beckman Multisizer™ 4 is one of the most versatile and accurate particle size and particle counter analyzers on the market today.

Beckman Multisizer™ 4 - Electrical Sensing Zone

The Beckman Multisizer™ 4 utilizes the coulter principle or Electric Sensing Zone (ESZ). This method allows the Beckman Multisizer™ 4 to return distributions of number, volume and surface area in a single measurement.
The Beckman Multisizer™ 4 has an overall size range of 0.4 μm to 1600 μm. This response is not affected by particle shape composition, refractive index or color.

The Coulter principle is the leading technology for high resolution and high precision. The Beckman Coulter Multisizer™ 4 further enhances this through the use of a Digital Pulse Processor (DDP). DDP offers ultra-high resolution, multi-channel analysis and precision unattainable by other similar technologies. These features make the Beckman Multisizer™ 4 ideal for any research project involving sizing and counting.

Multisizer™ 4 is an equally powerful quality control tool. Analysts now have a highly advanced, easy-to-use system that can resolve most particle size problems. The Beckman Multisizer™ 4 is the latest coulter counter designed with Smart and DDP technology to provide highly reliable and accurate particle counting and grading.

The Beckman Coulter Multisizer™ 4 retains the enhanced analog circuitry developed and refined by Beckman Coulter over the years. The Beckman Coulter Multisizer™ 3 introduces DPP to particle counting for the first time.

Beckman Multisizer™ 4 - Digital Principles Coulter integrates the latest advances in analog and digital circuitry. High-speed digitization of the signal enables more accurate particle characterization using multiple parameters. Beckman Multisizer™ 4 now enables dynamic dimensioning. Measurements for each particle are analyzed and stored; the stored data can then be analyzed and formatted in a variety of ways. Stored data can also be reanalyzed at a later date. With the Beckman Coulter Multisizer™ 4, there is no need to analyze the same particle twice.

Mature technology

Over half a century of experience counting and sizing particles and cells
Over 6,000 literature citations using Coulter's principles and 9 approved ASTM methods
Technology defined by international standard ISO 13319 Precise particle size, counting and high resolution technology, industry preferred particle counting and particle size distribution
It provides size, based on direct measurement of a real parameter of a particle - its volume. Color or index of refraction do not affect results
Capable of counting and determining particle size at concentration levels undetectable by other techniques
Dynamic dimension measurement. Pulse time stamping allows real-time measurement of dimensional changes

Excellent design

Ease of use. Instrument operation is completely controlled by computer. Intuitive software with wizards is ideal for beginners, while simple menus assist experienced operators
Positive displacement metering pump compatible with aqueous and organic fluids
Extended dynamic range
Environmentally friendly, mercury-free metering system
Improved performance in dusty environments
Sample management system using smart technology provides high consistency for running assays
EZAccess Fluid Management System
Electron Aperture Blockage Detection
Automatically launch user-selectable programs

Quality and convenience

User-Defined Standard Operating Procedures
Multiple Security Levels
Software Enables 21 CFR Part 11 Compliance
Powerful and flexible software allows data processing and presentation to meet all needs, including industrial applications, biological applications, academic applications, research and quality control
Automatic calibration and calibration verification ensures reliable results for dimensions and counts
V-Check Verification Package Provides a Comprehensive Solution for Today's Quality Assurance Requirements
Qualification procedures to assure instrument performance

Condition: certified pre-owned
Humidity: 10% to 80% without condensation
Particle Size Analysis Range: 0.4 µm to 1600 µm in diameter.
0.033 fL to 2.145 x 109 fL or µm3 in volume
Number of Channels: Pulse data is digitized and can be processed to achieve up to 400 size channels for a selected pulse range. Number of channels and range can be reprocessed as necessary.
Aperture Tube Analysis Range: Total range: 2% to 80% of aperture diameter.
Standard Range: 2% to 60% of aperture diameter.
Extended Range: 60% to 80% of aperture diameter.
Dynamic Range of Aperture: Standard 1:30 (by diameter) Total 1:40 (by diameter)
Standard 1:27,000 (by volume) Total 1:64,000 (by volume)
Linearity: ± 1% for diameter
± 3% for volume
Metering System: Mercury-free, wide range metering pump
Power Requirements: Less than 55 volt-amps (watts)
Regulatory Compliance: The software enables 21 CFR Part 11 compliance
Resolution: User selectable
Volumetric Pump Accuracy: Better than 99.5%
Operating Altitude: Up to 2000 m (6560 ft)
Operating Temperature: 5°C to 40°C
Aperture Current Accuracy: ± 0.4% of setting
Aperture Current Range: 30 µA – 6000 µA in 0.2 µA steps
Aperture Diameter: 20 µm to 2000 µm apertures
(nominal diameters)
Digital Pulse Processor: Proprietary high-speed digitalization of the signal.
Dimensions and Weight (excluding computer): Unpacked weight: 45 kg (99 lb)
Width: 64 cm (25 in)
Depth: 61 cm (24 in)
Height: 51 cm (20 in)
Input voltage within set ranges: 100 – 120 VAC; 230 – 240 VAC ± 10%; single phase
Electrolyte Solutions: All aqueous and non-aqueous electrolyte solutions recommended for use with aperture technology will be suitable for use with the Multisizer™ 4. Electrolytes should be compatible with glass, fluoropolymers, fluoroelastomers and stainless steel.
Environmental Conditions: a) This instrument is safe for indoor use only.
b) Installation category: 11.
c) Pollution degree: 1.
Fuse Types: 250 V, IEC (5×20 mm), Time delay (TD), 2.0 A
Modal Count Mode: 10 to 100,000 counts
Polarity Error: Less than 0.5%
Pulse Data: Time stamped pulses up to 525,000 per single analysis.
Pulse Distribution Data: Pulse distribution by time, sequence and width for pulse height diameter, pulse height volume, pulse height volt, pulse width, pulse area, average pulse height diameter, average pulse height volume and average pulse width. Number distribution by width.
Size Distribution Data: Size distribution by diameter, volume and area for number, number%, number/ml, volume, volume%, volume/ml, surface area, surface area% and surface area/ml.
Supply Frequency: 47 to 63 Hz inclusive
Time Mode: 0.1 to 999 seconds, selectable in 10 ms increments. Typically, time analysis is 10 to 90 seconds.
Total Count Mode: 50 to 500,000 counts
Volumetric Mode: Continuously selectable from 50 µL to 2000 µL

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