Laser Diffraction Particle Size Analyzers
We put the technical specifications of three instruments side by side, using figures from the manufacturers' own documents. The goal is practical, not promotional: give you the concrete data you need to choose the right analyzer for your laboratory. Where each instrument is stronger, we say so.
Overview
All three are ISO 13320 compliant laser diffraction analyzers and complete a measurement in under 10 seconds. The differences emerge in optical design, the approach to shape analysis, and the intended use case.
Technical Comparison
All values are taken from manufacturer brochures and technical documents. They are not independent test results; we recommend requesting current brochures before a purchase decision.
| Specification | Bettersizer 2600 PlusBettersize Instruments | Bettersizer S3 PlusBettersize Instruments | Mastersizer 3000Malvern Panalytical |
|---|---|---|---|
| General | |||
| Measurement principle | Laser diffraction + dynamic imaging (integrated, dual camera) | Laser diffraction + dynamic image analysis (integrated, dual camera) | Laser diffraction; imaging requires the separate Hydro Insight accessory |
| Total measurement range | 0.02 – 3500 µm | 0.01 – 3500 µm (laser) · 2 – 3500 µm (imaging) | 0.01 – 3500 µm Entry-level 3000+ Lab: 0.1 – 1000 µm (upgradeable) |
| Wet measurement (laser diffraction) | 0.02 – 2600 µm; up to 3500 µm with imaging | 0.01 – 3500 µm | 0.01 – 3500 µm (with Hydro units) |
| Dry measurement (laser diffraction) | 0.1 – 2600 µm | — (platform focused on wet dispersion) | 0.1 – 3500 µm (with Aero units) |
| Typical measurement time | <10 seconds | <10 seconds | <10 seconds |
| Optical System | |||
| Optical design | Combined Fourier + inverse Fourier (patented), automatic alignment | DLOI: dual lenses, oblique incidence (patented), automatic alignment | Reverse Fourier, single lens (convergent beam), automatic alignment |
| Angular detection range | 0.016° – 165° | 0.02° – 165° | 0.015° – 144° |
| Detectors | 92 spherically arranged detectors | 96 detectors (forward, side and back scattering) | Log-spaced detector array |
| Light source | 635 nm, 10 mW red fiber laser; no warm-up required | 532 nm, 10 mW DPSS green laser; no warm-up required | 632.8 nm He-Ne red laser (max. 4 mW), approx. 30 min warm-up + 470 nm blue LED (10 mW) |
| Refractive index (RI) measurement | Yes — automatic RI determination | Yes — automatic determination within 1.4 – 3.6 | No; literature values / user input required |
| Calculation models | Mie and Fraunhofer | Mie and Fraunhofer | Mie and Fraunhofer |
| Performance | |||
| Accuracy (D50)* | ≤ 0.5% | ≤ 0.5% | 0.6% |
| Repeatability (D50)* | ≤ 0.5% | ≤ 0.5% | < 0.5% |
| Reproducibility (D50)* | ≤ 1% | ≤ 1% | < 1% |
| Data acquisition rate | 10 kHz | 10 kHz | 10 kHz |
| Shape Analysis and Imaging | |||
| Integrated dynamic imaging | Yes — dual-camera system | Yes — dual-camera system | No; Hydro Insight accessory purchased separately |
| Shape parameters | 24 parameters (circularity, aspect ratio, etc.) | Circularity, L/D, perimeter, area, axis lengths, fiber length, etc. | Provided via accessory |
| Oversized particle detection | Real-time images up to 3500 µm | Real-time images up to 3500 µm | — |
| Dispersion System | |||
| Wet / dry dispersion | Modular; tool-free switching between wet and dry units | Wet dispersion (standard configuration) | Separate Hydro (wet) and Aero (dry) units |
| Ultrasonic disperser | Depends on module; dry-run protection | 50 W, 38 kHz; dry-run protection | Max. 40 W, 40 kHz |
| Water circulation | Depends on module; automatic water intake and rinsing | Centrifugal pump, 500 – 2500 ml/min; automatic water intake and rinsing | Depends on the Hydro unit; Hydro EV beaker-based (250 / 600 / 1000 ml), Hydro MV/LV closed circuit; max. 2.0 l/min |
| Automated sample feeding | Optional automated feeding | Automated test function | Autosampler option (up to 42 samples) |
| Software and Compliance | |||
| 21 CFR Part 11 | Compliant | Compliant | Compliant (via OmniTrust on the 3000+ series) |
| Standards | ISO 13320, ISO 13322-2, USP <429> | ISO 13320, USP <429>, CE | ISO 13320, USP, EP |
| SOP automation | Yes | Yes | Yes (3000+: SOP Architect) |
| Reporting and data export | SOP-based reporting; flexible report design | 14+ report formats; export to Excel, PDF, Word, JPG; direct printing | Malvern software (3000+: Data Quality Guidance) |
| Physical Characteristics | |||
| Dimensions (W × D × H) | —** | 820 × 610 × 290 mm | 690 × 300 × 450 mm |
| Weight (main unit) | —** | 48 kg | 30 kg |
| Laser safety class | Class I laser product | Class I laser product | Class I laser product |
* Accuracy, repeatability and reproducibility values are manufacturer claims; Bettersize figures refer to the D50 of a GBRM certified reference material. ** For the physical dimensions of the Bettersizer 2600 Plus, please refer to the current manufacturer brochure. The Mastersizer 3000 has been succeeded by the Mastersizer 3000+ series (Lab / Pro / Ultra) since 2024; 3000+ differences are noted in the table.
Honest Assessment
No instrument is the best choice in every scenario. The assessment below is based on field experience and manufacturer data.
Frequently Asked Questions
For quality control and production laboratories that routinely measure both wet and dry samples, the Bettersizer 2600 Plus stands out with its modular design. For R&D work that needs submicron sensitivity and refractive index determination, the Bettersizer S3 Plus is the better match. For laboratories whose existing methods are built on a Mastersizer, the switch should be decided on parallel measurement results; we run that test with your own samples.
All three instruments operate under ISO 13320 with Mie and Fraunhofer models, so results are comparable in nature. Differences in optical design can still produce small deviations in D10, D50 and D90 values. The right approach is to run parallel measurements on both instruments with your critical samples and re-validate your acceptance criteria. Our demo process covers exactly that.
A shorter wavelength strengthens the scattering signal from fine particles, which helps resolution in the submicron region. The 532 nm DPSS source is used in the Bettersizer S3 Plus; the 2600 Plus runs on a 635 nm fiber laser, which also requires no warm-up. Solid-state lasers last considerably longer than He-Ne tubes. The Mastersizer 3000 supports the submicron region with a 470 nm blue LED instead; the approach differs, but the goal is the same.
The values are compiled from published brochures and technical documents of Bettersize and Malvern Panalytical. Manufacturers may update their specifications; this page does not constitute a binding offer. You can request current, official brochures from us before making a purchase decision.
Yes. The most reliable way to choose an instrument is to base the decision on results from your own sample. Send us your sample; we will run the measurement and share the report with you. We also provide comparative evaluation against your current instrument's results.
Quote and Information
Reach out to our expert team for pre-sales technical consulting, demo requests, or pricing. 25 years of experience at your side.
