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$Microtrac S3500 Laser Diffraction Particle Size Analyzer – Tri-Red-Laser | 0.02–2800 µm$

With every system

Installation & training on-site alignment and operator onboarding
Method + sample run a PSD measurement on your own powder

Laser Diffraction (LD), Mictrotrac Particle Characterization, Particle Size & Shape Analysis

Microtrac S3500 Laser Diffraction Particle Size Analyzer – Tri-Red-Laser | 0.02–2800 µm

Tri-red-laser diffraction particle size analyzer — 0.02 to 2,800 µm, wet and dry on one bench, with fixed enclosed optics and Modified Mie sizing for non-spherical powders.

✔ Range 0.02–2,800 µm · three red 780 nm lasers, 151 detector segments
✔ Wet and dry measurement · ~10–30 s per run
✔ Fixed enclosed optics — holds calibration, minimal operator intervention
✔ Lead time: configured to order — request current timeline

Prices follow supplier cost and stock availability and are updated regularly. The price you see is today's price — once you order, it's held for 7 days.

Install + training included Tailored service plan

0.02–2800 µm measuring range

3 red lasers

151 detector segments

ISO 13320 conformant

What your QC lab actually checks

Defensible D-values

Fixed enclosed optics, 151 detector segments and Modified Mie sizing give repeatable D10/D50/D90 that hold across operators and lots — ISO 13320 numbers your QC sign-off can stand behind.

An applications engineer on the line

Dispersion, wet-vs-dry and SOP method development from engineers who run powder characterization in-house at ATO Lab. Sub-4h reply, NDA standard.

0.02–2800 µm

Measuring range

3× red 780 nm

Lasers

151

Detector segments

Wet & dry

Modes

~10–30 s

Measurement time

About this product

The Microtrac S3500 is a tri-red-laser diffraction particle size analyzer for lab and QC teams: 0.02 to 2,800 µm in a single measurement, wet or dry on one bench, with fixed enclosed optics and Modified Mie sizing so irregular, non-spherical powders are measured accurately rather than forced into a sphere model.

Microtrac S3500 tri-red-laser diffraction particle size analyzer — The S3500 — a fixed-optics tri-red-laser diffraction analyzer for lab and QC.

Why labs choose the S3500

A proven fixed-optics laser-diffraction workhorse that holds calibration and gives defensible D-values.

Broad single-range measurement

One 0.02–2,800 µm range covers fines to coarse in a single measurement — no lens changes and no re-ranging between samples.

Non-spherical accuracy

Modified Mie calculation sizes irregular metal powder, ground material and flakes accurately instead of forcing them into a sphere model.

Wet and dry on one bench

An SDC sample-delivery controller with ultrasonic dispersion switches between wet and dry measurement without a second instrument.

Fixed, protected optics

Two fixed detectors and an enclosed optical path hold alignment — little operator intervention and stable calibration, run after run.

How Additive Plus supports it

You buy a configured, installed analyzer with a method dialed in on your material — not a boxed instrument and a manual.

Step 01

Configure to your material

We spec the wet cell, dry eductor or both, and the sample-delivery controller to match your powder chemistry and size range before it ships.

Step 02

Install & train

Factory-trained engineers install, align and train your operators on-site — dispersion setup, measurement and data handling.

Step 03

Method & QC support

We help build the SOP — D10/D50/D90 reporting, ISO 13320 method development and a lot-to-lot baseline so results stay repeatable.

What the S3500 measures

Full technical specifications are in the Specifications tab. Key measurement capability:

Parameter	S3500
Measuring range	0.02 µm – 2,800 µm (0.02 µm – 2.8 mm)
Optical system	Three red 780 nm lasers; two fixed detectors, 151 segments, 0.02–165°
Calculation	Mie, Modified Mie (non-spherical), Fraunhofer
Measurement mode	Wet and dry
Measuring time	~10 to 30 seconds
Standards	ISO 13320; FDA 21 CFR Part 11 data-integrity features

Metal and technical powders sized by laser diffraction on the Microtrac S3500 — Metal and technical powders — broad-range PSD from fines to coarse.

Battery cathode and anode active powders sized on the Microtrac S3500 — Battery materials — cathode and anode active powders.

Chemicals and coatings powders sized by laser diffraction on the Microtrac S3500 — Chemicals and coatings — powder coatings and catalysts.

Typical applications

Where broad-range, shape-aware particle sizing supports QC.

Metal AM powders

LPBF / DED feedstock PSD & fines

Battery materials

Cathode / anode active powders

Pharmaceuticals

APIs, excipients, inhalables

Ceramics & pigments

Slurries, fine oxides, colorants

Chemicals & coatings

Powder coatings, catalysts

Food & minerals

Milled solids, geology / mining

Not sure the S3500 is the right analyzer?

Sub-micron focus, size + shape together, or a nano focus.

Sub-micron resolutionMicrotrac BLUEWAVEAdds two blue lasers · floor to 0.01 µm.Compare analyzer →
Size + shape in oneMicrotrac SYNCLaser diffraction + image analysis together.Compare analyzer →
Nano focusMicrotrac NANOTRAC WAVE IIDLS for nanoparticles below 100 nm.Compare analyzer →

Tell us the material and size range you need to measure — our applications engineer will confirm whether the S3500, the sub-micron BLUEWAVE or size-and-shape SYNC is the right fit, and can run your own sample first. Sub-4h reply, NDA standard.

Why source the S3500 through Additive Plus

Authorized US channel — sales, installation, training and service in one place.
We run powder characterization in-house at ATO Lab — you talk to engineers who use these methods, not a ticket queue.
Method development on your material — dispersion, wet vs dry and a repeatable D10/D50/D90 SOP.
Paid sample measurement before you commit — ship us your powder, get the full PSD report. Sub-24h response, NDA standard.

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

Download Microtrac S3500 Particle Size Analyzer brochure

pdf · 535 KB

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Download Microtrac S3500 Application Note brochure

pdf · 884 KB

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Product videos

Common questions

Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.

What size range does the Microtrac S3500 measure?

The S3500 measures particle size from 0.02 to 2,800 µm (2.8 mm) in a single measurement, using three red 780 nm lasers and two fixed detectors with 151 logarithmically spaced segments across 0.02–165°. That broad range covers fine and coarse fractions without changing lenses or re-ranging, which suits general-purpose lab and QC work on powders, suspensions and emulsions.

What is the difference between the S3500 and the BLUEWAVE?

Both are Microtrac tri-laser diffraction analyzers on the same fixed-optics platform. The S3500 uses three red 780 nm lasers and is the broad-range general-purpose workhorse from 0.02 µm. The BLUEWAVE replaces two of those with 405 nm blue lasers to sharpen sub-micron resolution down to a 0.01 µm floor. Choose the S3500 for routine 0.02–2,800 µm QC; step up to the BLUEWAVE when sub-micron fines drive your specification.

Does the S3500 measure both wet and dry samples?

Yes. An SDC sample-delivery controller with ultrasonic dispersion runs wet suspensions, while a dry eductor handles free-flowing powders — both on the same S3500 without a second instrument. We configure the wet cell, dry eductor or both to your material and help set the dispersion method so wet and dry results agree where they should.

How does it handle non-spherical particles like metal powder?

The S3500 applies Microtrac's Modified Mie calculation in addition to standard Mie and Fraunhofer models. Modified Mie accounts for irregular shape, so metal AM powder, ground material and flakes are sized accurately rather than forced into an equivalent-sphere model that biases the distribution. That matters for LPBF and DED feedstock where fines and coarse tails affect flow and packing.

Is the S3500 compliant with ISO 13320 and 21 CFR Part 11?

The S3500 measures according to ISO 13320 for laser diffraction, and the FLEX software supports FDA 21 CFR Part 11 data-integrity controls — password protection, electronic signatures and assignable permissions — for regulated QC. Standards conformance and audit-ready data are what ISO audits, pharmaceutical QC and aerospace powder qualification require.

Can it qualify metal AM powders for LPBF or DED?

Yes. The S3500 is widely used for incoming and lot-release QC of metal additive-manufacturing feedstock, reporting D10/D50/D90 and the fine and coarse fractions that govern spreadability and packing density. Additive Plus runs powder characterization in-house at ATO Lab, so we can help you build an SOP and a lot-to-lot baseline for your specific alloy and printer.

What lead time and support come with the S3500?

The S3500 is configured to order — wet, dry or both and the sample-delivery controller — so lead time depends on the configuration; request a current timeline and we confirm it in writing. Installation, alignment, operator training and method development on your own material are included, backed by application engineering with a sub-4-hour response.

Place your order, or talk to an engineer first

Order Microtrac S3500 Laser Diffraction Particle Size Analyzer – Tri-Red-Laser | 0.02–2800 µm direct, or talk to materials engineer

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