Laser Diffraction Particle Sizer - Dual-Laser PSD Analyzer - 0.01-2000 µm - ≤0.5% Repeatability

The Master Science Laser Diffraction Particle Sizer is a classic laser diffraction system for reliable particle size distribution measurement in QC and research laboratories. A main red laser and an auxiliary short-wavelength laser, together with side-scatter detection, extend sensitivity toward fine particles while keeping coarse-range performance.

Five versions are offered: an integrated wet-and-dry unit, two wet-only and two dry-only models, each with built-in dispersion and one-key automatic testing.

Technical Specifications

Model overview and specifications of the Master Science Laser Diffraction Particle Sizer:

• Brand: Master Science
• Model Number: MSPSA-2L2308ASWISS, MSPSA-LA2800ASWISS, MSPSA-LA2800BSWISS, MSPSA-LD3008ASWISS, MSPSA-LD3008BSWISS
• SKU: MSPSA-2L2308ASWISS, MSPSA-LA2800ASWISS, MSPSA-LA2800BSWISS, MSPSA-LD3008ASWISS, MSPSA-LD3008BSWISS
• MSPSA-2L2308ASWISS: Wet and dry; wet 0.01 to 2000 µm, dry 0.1 to 2000 µm; 127/100 detectors; ≤ 1 % (CRM D50)
• MSPSA-LA2800ASWISS: Wet; 0.01 to 2000 µm; 106 detectors; ≤ 0.5 %
• MSPSA-LA2800BSWISS: Wet; 0.01 to 1500 µm; 88 detectors; ≤ 0.5 %
• MSPSA-LD3008ASWISS: Dry; 0.1 to 2000 µm; 100 detectors; ≤ 1 %
• MSPSA-LD3008BSWISS: Dry; 0.1 to 1200 µm; 100 detectors; ≤ 1 %
• Principle: Laser diffraction, Mie and Fraunhofer; ISO 13320
• Lasers: Main 632.8 or 639 nm; auxiliary 405 or 650 nm (by model); Class 1
• Detection Angle: 0.015° to 145° (log-spaced array, where fitted)
• Alignment: Automatic, 0.1 µm micro-stepping
• Test Time: Wet ≤ 2 min; dry ≤ 1 min; typical measurement ≤ 10 s
• Wet Dispersion: 40 kHz ultrasonic (50 to 60 W), stirrer 0 to 3000 rpm, circulation up to 30 L/min, 550 to 1000 mL tank
• Dry Dispersion: Turbulent dispersion with shock-wave shear; compressed air; automatic feeder
• Data Acquisition: 10 kHz
• Reports: Word, Excel, image, text; PC/LIMS connection
• Audit Trail: Optional 21 CFR Part 11 software
• Environment: 5 to 35 °C, humidity < 85 %
• Power Supply: 220 V, 50/60 Hz
• Dimensions: 1040 × 440 × 540 mm
• Net Weight: 70 kg (2L2308A); 58 kg (other models)

Key Benefits

• One-key testing: the whole wet cycle, from water supply to cleaning and report, finishes automatically in about two minutes.
• Better fine-particle detection: dual-laser orthogonal optics in the Master Science Laser Diffraction Particle Sizer extend the measuring range.
• No pipeline settling: fully built-in dispersion keeps the circulation path short and representative.
• Hands-free alignment: motorised optics stay aligned without technician adjustment.
• Choose only what you need: wet-only, dry-only or combined models fit different budgets.

For combined modular wet and dry dispersion with a wider 3500 µm range, see the Master Science laser particle size analyzer.

Product Features

Optics

• Convergent-light Fourier transform optical path
• Dual-laser orthogonal illumination
• Side-scatter detection technology
• Automatic four-motor alignment

Dispersion

• Integrated wet system with stirring, ultrasonic and circulation
• Turbulent dry dispersion with shock shear
• One-key SOP operation

Software

• Free-fitting analysis without fixed models
• Free, R-R, log-normal and sieve distributions
• Batch comparison and custom calculations

Applications

The Master Science Laser Diffraction Particle Sizer is used for:

• Building materials, cement and fly ash
• Abrasives, ceramics and metal powders
• Pharmaceutical and food powders
• Paints, pigments and fillers
• Battery materials and research laboratories

Optional Accessories

• Micro-sample cuvette (wet models)
• Audit trail software

Common Laboratory Problems and How This Particle Sizer Helps

How the Master Science Laser Diffraction Particle Sizer helps with common sizing problems:

• Operator-dependent dispersion: one-key SOPs standardise every run.
• Fine fractions not detected: short-wavelength auxiliary laser improves sub-micron response.
• Time-consuming cleaning: automatic rinse cycles are part of each test.
• Optical drift: automatic alignment restores the optimum light path.
• Different instruments for wet and dry: the combined model switches with one key.