LUMiReader X-Ray
LUMiReader® X-Ray 440 Gravity Seperation & Particle Analyser
Reveal what light can’t. Analyse what matters.
The LUMiReader X-Ray is a dispersion analyzer engineered exclusively to investigate dispersibility, stability, separation, and consolidation behaviors in materials ranging from completely transparent to entirely opaque — including emulsions, suspensions, sludges, slurries, foams, and powders — all in real time. For the first time ever, illuminate your entire sample from top to bottom in an instant, gaining complete insight into even the most complex dispersion challenges. See beyond what light can reveal.
Our patented technology fuses X-ray vision with the proven STEP-Technology®, delivering exceptional spatial resolution, ultra-short sampling intervals, and a powerful detection system. Using monochromatic and parallel X-rays generated through a precision crystal, the LUMiReader X-Ray captures every detail with clarity.
With over 1,600 detectors recording the transmitted X-ray beam, the instrument achieves unprecedented resolution across the full 20 mm height of the sample cell. The kinetics of the real-time transmission profiles are analyzed to determine stability and separation rates, while extinction profiles allow calculation of particle concentration, sediment packing density, and X-ray attenuation.
The LUMIREADER® X-RAY Excels In These Analysis:
- Phase separation at any concentration
- Homogeneity of emulsions, suspensions and powders
- Stability testing at highest concentration
- Pigment segregation
- Nano detection in supernatants
- Dispersibility
- In-situ sediment & cake structure analysis
- Sediment profiling
- From transparent to opaque dispersions
- Foam drainage
- Solidosity
- Dewaterability & consolidation
Maximum comparison precision and no material data such as viscosity or density required


The LUMiReader® X-Ray is a gravity particle and dispersion analyser: to study dispersability, stability, separation, and consolidation phenomena for completely
transparent to completely opaque emulsions or suspensions. For the first time, X-rays illuminate your sample instantaneously from top to bottom. Solve your most challenging inorganic material problems with complete insight.
Go places light cannot.
Our patented solution combines X-ray vision with the proven STEP-Technology®, permitting highest spatial resolution, short sampling intervals and powerful
detection technique. The LUMiReader® X-Ray creates monochrome and parallel X-rays with the help of a special crystal, which transmits the entire sample cell of 20 mm height.
The X-ray line detector records the transmitted beam, giving an unprecedented resolution. Instantaneous transmission profiles across your whole sample are converted into stability and separation rates. Particle concentration, sediment packing density can also be calculated based on the extinction profiles. The obtained Space- and Time-resolved Extinction Profiles across your whole sample are converted into concentration gradients as well as stability and separation rates. Particle size distribution, particle density, volume concentration and sediment packing density can also be calculated based on the extinction profiles 4 – 7 .
The LUMiReader® X-Ray allows you to characterize and optimize particle, formulation and product properties, from dispersibility via stability & separation to the quantification of separated phases and solid matrices. Regardless of the shape or concentration of your dispersed particles and droplets. In-situ, real-time, non-invasive and non-destructive.
Typical applications are cosmetics, pharmaceutics, paint & pigments, construction materials and fillers, as well as mining, ceramics and petrol industry dealing with complex emulsions, slurries and sludges.
There are many claims out there about the ability to analyze concentrated systems. When pressed however, it turns out that what is concentrated to one person is dilute to another. With that in mind, and wanting to avoid any confusion, all we can state unequivocally is that the LUMiReader X-Ray was designed with one goal in mind: to allow you to analyze and understand concentrated and totally opaque emulsions and suspensions.
How concentrated? As high as you want to go. As opaque as you want it to be. Top to bottom, instantaneously. No other technology can do this. Not even close.
The LUMiReader X-Ray is simple to operate. It comes certified, factory pre-calibrated and ready-to-go.
Discover the possibilities of the state-of-the-art software SEPView.
Advanced Particle Sizing with the LUMiReader® X-Ray
X-ray extinction for particle sizing beyond optical limits
Particle sizing of inorganic materials with the LUMiReader® X-Ray (LRX), all advantages of separating techniques apply, is based on monochrome X-ray transmission, providing a
powerful alternative to optical methods that struggle with opaque or highly concentrated dispersions. By applying Lambert-Beer’s law, the instrument translates X-ray attenuation
into direct information about the volume concentration of suspended particles, even in samples that are impenetrable to visible or near-infrared light.
Analysis of particle size distribution follows ISO 13317-3:2001 “Determination of particle size distribution by gravitational liquid sedimentation methods; Part 3: X-ray gravitational technique”. Display the raw data and apply several fit functions.

ADVANTAGES OF PARTICLE SIZING WITH LRX
1. Particle and droplet sizing over whole sample (STEP).
2. True raw data – direct physical measurement.
3. From nm to µm same principle.
4. Multimodal systems with high resolution.
5. Higher concentrations than other techniques.
6. No restrictions regarding liquid continuous phase (closed cell).
7. No refractive indices required for volume-weighted particle size distribution.
MATERIAL OVERVIEW
The following materials can be analyzed with the LUMiReader® X-Ray
- Abrasives
- Agrochemistry
- Batteries & fuel cells
- Carbon black (modified)
- Catalysts
- Ceramics
- Clays
- Coated particles
- Construction materials
- Cosmetics
- Ferrofluids
- Fillers
- Inks
- Laqueurs
- Lubricants Magnetic particles
- Metals
- Minerals
- Nanosuspensions
- Oil sands
- Paints
- Paper Dispersions
- Pharmaceuticals
- Pigments
- Rigid foams
- Silicone oil emulsions
- Sludges
- Solid electrolytes
- Titanium dioxide
- Wastewater
APPLICATION SAMPLES
Examples of X-ray measurements single and combined with centrifugal consolidation






Download & Technical Data
Technical Data LUMiReader® X-Ray
Technical Data LUMiReader® X-Ray
| Measurement principle | Monoenergetic X-ray attenuation / transmission |
| Phase separation | Low to high concentrated dispersions (transparent or opaque) |
| In situ sediment analysis | Packing density & structure |
| Stability analysis – observation time | 1s to ∞ |
| Particle size distribution range | 70 nm to 100 µm |
| Consolidation measurements | Typically 10 seconds, also in combination with LUMiFuge & LUMiSizer |
| Conformity | ISO 13317-3, ISO 18747, ISO/TR 13097, ISO/TR 18811, CFR 21 Part 11 |
| Samples | Suspensions, emulsions, suspo-emulsions, sludges, slurries, foams, chemical solutions, solid flat objects, powders |
| Channels | One |
| Volume | 0.2 ml to 1.5 ml |
| Dispersion concentration | 0.015 Vol% to 75 Vol% |
| Radiation source | Molydenum X-ray tube, 17.48 keV |
| Temperature control | 15 °C to 40°C, specific applications have successfully been tested at 60 °C (with thermostat) |
| Cells | Different materials, optical pathlength 1 mm – 10 mm |
| Dimensions (WxHxD), Weight | 47 x 24 x 52 cm, 25 kg |
| Power supply | Main power connection = 24 V DC, power consumption max. 9.2 A / 221 W |
| Safety | Directive 2013/59/EURATOM Full protection device according to § 21 StrlSchV |
| Radiation control requirements | none* *Type approval according to German X-ray ordinance (PTB 1/25 V StrlSchG) |




