In stock
- Full lot COA — PSD, sphericity, flow rate, chemistry
- Qualified parameter sets for the major LPBF systems
- Mutual NDA before any file or spec review
- Free U.S. shipping over $200 · fast dispatch from L.A.
Microtrac S3500 Particle Size Analyzer
What your process engineer actually checks
Locked, traceable lot chemistry
Every lot ships with a COA documenting PSD, sphericity, flow rate, apparent density, and full chemistry — and a lot number you can trace. Aerospace and medical teams reorder 4+ times without re-qualifying.
Qualified parameters, not just powder
Validated parameter sets for EOS M 290, Renishaw 500Q, SLM 280, and our own AO Metal LPBF ship with the order. Load the profile and hit density on the first build — no parameter-development burn.
A materials engineer on the line
Questions on ferrite content, flowability, recyclate ratios, or HIP response? A materials engineer answers directly — not a contact-form bot. Most replies in under 4 hours, NDA standard.
The Microtrac S3500 is a industry-preferred Laser Diffraction (LD) analyzer, ideally suited for various particle characterization tasks. It is the first particle size analyzer that uses three precisely placed red laser diodes to accurately characterize particles like never before. The patented Tri-Laser System provides accurate, reliable and repeatable particle size analysis for a diverse range of applications by utilizing the proven theory of Mie compensation for spherical particles and the proprietary principle of Modified Mie calculations for non-spherical particles. The S3500 measures particle size from 0.02 to 2,800 µm.
FEATURES
- Tri–laser, red, multi-detector, multi-angle optical system
- Algorithms that utilize Mie compensation and Modified Mie calculations for non-spherical particles
- Measurement capability from 0.02 to 2,800 µm
- Wet and dry measurements
- Enclosed optical path ensures complete protection of the optical components leading to little or no operator intervention
ADVANTAGES
- Utilizing three red lasers, increases the range of measurement, giving you the flexibility to conduct analysis on a wide range of samples
- Proprietary Modified Mie calculations allow users to accurately measure complex particles that other particle analyzer struggle to accurately characterize
- Seamless transition from wet to dry measurement reduces down time
- Fixed detectors provide rugged durability and assure proper positioning
- Small bench footprint reduces demand on valuable laboratory space
VERSIONS AND ACCESSORIES
CAPABLE OF DELIVERING SUSPENSIONS TO MICROTRAC PARTICLE SIZE ANALYZERS
SAMPLE DELIVERY CONTROLLER (SDC)
The Sample Delivery Controller (SDC) works in conjunction with the Microtrac S3500 and Bluewave laser diffraction systems. The SDC is fully automated and is designed to deliver a well-dispersed sample quickly and accurately.

FEATURES
- Dispersion vessel constructed of surgical-grade stainless steel
- Compatible with organic or inorganic samples
- Integrated ultrasonic probe for sample dispersion
- Vessel features natural turbulence to ensure sample is dispersed at all times
- Self-cleaning mechanism
ADVANTAGES
- Rugged surgical steel construction protects the instrument from corrosion
- High compatibility with samples allows for organizations to have multiple purposes for the instrument
- Ultrasonic power and duration is programmable
DRY POWDER DISPERSION DEVICE COMBINED WITH LASER DIFFRACTION SYSTEMS
TURBOTRAC
TURBOTRAC’s primary function is to deliver a properly dispersed sample to the measuring cell in the Microtrac optical bench allowing for consistent and repeatable particle size analysis of dry powders.

FEATURES
- Flexibility of compressed air and flow conditions settings
- Small sample volumes
- Rapid measurements
- Automatic sampling
- Repeatability
- Data consistency
ADVANTAGES
- Allows the user to achieve dispersion usually associated with fluid dispersal systems for highly agglomerated materials such as alumina. Dispersion conditions can be altered for the measurement of the most fragile crystals
- Sample volumes can be as small as 0.1 ml. Ideal for applications when sample is expensive to produce/ produced in small volumes
- Measurement time is typically 10 seconds with the Turbotrac Autoscan – even shorter using the Microtrac One-Shot accessory for very small sample volumes
- Microtrac FLEX software facilitates easy programming of measurement cycles. Simply place the sample in the sample tray, enter identifiers and press RUN. Data is saved
- Data is comparable to fluid dispersions in most cases
- Consistent control of aspiration settings deliver excellent sample-to-sample and bench-to-bench repeatability
CIRCULATION DEVICE MADE FOR SMALL, HIGH VALUE MATERIALS AND FOR DISPERSING MATERIALS IN EXPENSIVE FLUIDS: USVR
The Microtrac Ultra Small Volume Recirculator (USVR) works in conjunction with the S3500 or Bluewave laser diffraction systems.

FEATURES
- 35 to 50 ml recirculation volume
- Vessel constructed out of surgical-grade stainless steel
- Variable speed centrifugal pump
- Compatible with most organic and inorganic solvents
- Manual fill and drain valve
ADVANTAGES
- Small sample volume allows users to save lab resources by requiring minuscule sample amounts during particle analysis
- Rugged surgical grade stainless steel construction protects the instrument from corrosion when using organic and inorganic solvents
- Engineered for quick and easy operation
- Easily interchangeable with other Microtrac sampling instruments – decreases production / process downtime
MS30 AUTOSAMPLER: AUTOMATE YOUR SAMPLE HANDLING
- Automate your sample-handling tasks
- Increase your laboratory productivity
- Ensure sample integrity
- Tap and rinse function
- Variable sample volume up to 2.5ml

TECHNICAL DATA
| Number of Samples: | 30 |
|---|---|
| Sample Volume: | Up to 2.5 ml wet or dry |
| Electrical: | 100-240vac / 47-62hz |
| Power Consumption: | 300 W max. |
| Enviromental: | Temperature: 5 – 40°C, Humidity: 90% RH, non-condensing maximum, Pollution Degree 2 |
| Physical Specifications: | All external parts are constructed of stainless steel or painted with acid-resistant polyurethane paint for corrosion protection |
| Dimensions: | 16W x 14.25D x 12.5H in (406 x 361 x 318 mm) |
| Weight: | 38 lbs. (17.2 kg) |
MICROTRAC S3500 TYPICAL APPLICATIONS
Used in various fields such as: beverages, biotechnology, chemicals, food, medicine / pharmaceuticals, metal powders, metals, pigments, geology / metallurgy, etc.



chemicals
battery materials
powders
| Brand | Microtrac |
| Country of origin | Germany |
| Measuring range | 0.02 µm - 2.8 mm |
| Measuring principle | Laser diffraction |
| Lasers | 3x Red 780 nm |
| Laser power | 3 mW nominal |
| Detection system | Two fixed photo-electric detectors with logarithmically spaced segments placed at correct angles for optimal scattered light detection from 0.02 to 165 degrees using 151 detector segments |
| Data | Volume, number and area distributions as well as percentile and other summary data |
| Data format | Stored in ODBC format in encrypted Microsoft Access Databases to ensure compatibility with external statistical software applications |
| Data integrity | Data integrity may be ensured using FDA 21 CFR Part 11 compliant security features including password protection, electronic signatures and assignable permissions |
| Measuring time | ~ 10 to 30 seconds |
| Power requirements | AC input: 90 - 132 VAC, 47 - 63 Hz, single phase; 200 to 265 VAC, 47 - 63 Hz, single phase |
| Power consumption | 25 W nominal, 50 W max. (depending on options installed) |
| Temperature | 5° to 40° Celsius (50° to 95° Fahrenheit) |
| Humidity | 90% RH, non- condensing maximum |
| Storage temperature | -10° to 50° Celsius (14° to 122° Fahrenheit) dry only |
| Physical specifications | Case Material: Steel and impact resistant plastic Exterior surfaces are finished with corrosion resistant paint or plating |
| Dimensions (W x H x D) | 22×14×18in / 560×360×460mm |
| Weight | 60lbs / 27kg |
| Eductor air supply | 100 psi (689 kPa) maximum pressure 5 CFM (8,5 m3/h) at 50 psi (345 kPa) minimum flow rate Free of dry contaminants, moisture and oil |
| Vacuum | Vacuum must exceed 50 CFM |
Full documentation — TDS, SDS, batch COA, and parameter sets for the major LPBF platforms. Everything you need for qualification under AS9100 / ISO 13485 workflows.
We atomize our own. Custom variants on request.
Tighter PSD, modified chemistry, custom blend? Our ATO atomization lab runs custom batches in 3–4 weeks. Biocompatible, refractory, proprietary — all in-house, verified before ship.
From process engineers running Microtrac S3500 Particle Size Analyzer
Unedited feedback from customers who reorder Microtrac S3500 Particle Size Analyzer.
Same lot 4 times in a row. We stopped re-running parameter sweeps after the second order — density was identical to the first build.
Asked about ferrite content on a Friday. A materials engineer answered Monday morning with actual data, not a sales pitch. That's why we keep ordering.
COA matches the bottle. PSD and flow are exactly what was on the sheet — we run it on a Renishaw 500Q and it hits density on the first try.
Place your order, or talk to an engineer first
Order Microtrac S3500 Particle Size Analyzer direct, or talk to materials engineer