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The new temperature ramp extends direct & accelerated stability testing

In the consumer goods sector, especially for cosmetic and HPC products, rapid innovations and constantly new products are expected. This poses great challenges for the R&D department, as there is not enough time to determine the physical storage stability in real time. The new temperature ramp, an add-on module of the analytical centrifuge LUMiSizer, gives you advanced possibilities for analytical characterization, already very early in the formulation process. Get to know this new technique, introduced by Dr. Arnold Uhl and presented live for the first time during in-cosmetics 2022 in Paris.

Analytical characterization of starch, Part 2: Starch as emulsion stabilizer

New English webinar series "Analytical characterization of starch". Part 2: Starch as emulsion stabilizer This webinar series is aimed at users of starches in the food, paper and textile industries and provides valuable information for formulators using other polysaccharides for emulsions, suspensions, pastes and as adhesives. In the second (free) 17-minute webinar we will focus on viscosity building starches and lipophilic starches and their use as emulsion stabilizers. Examples of literature discussed are: - Coconut milk stabilized with starch and corn kernels - hydrophobically modified starch as an emulsion stabilizer - the emulsifying properties of modified pea and corn starch.

Analytical characterization of starch, Part 1: Investigation of suspensions & pastes

New English webinar series "Analytical characterization of starch" Part 1: Investigation of suspensions and pastes takes place on February 28, 2022. This webinar series is aimed at users of starches in the food, paper and textile industries and provides valuable information for formulators using other polysaccharides for emulsions, suspensions, pastes and as adhesives. In this first (free) 20-minute webinar, we will use the properties and applications of starch to discuss the potential use of LUM meters for particle characterization, directly determining suspension stability, and economically and fast determining the adhesive strength of dried starch on surfaces. Case Studies: -Sedimentation behavior of suspensions in the Earth's gravitational field & under accelerated conditions -Influence of impurities on starch paste - Adhesion of dried starch paste on various surfaces.

Lubricants & Coolants, Part 3: How to analyze with LUM instruments

The third webinar starts from a different point of view: the naked eye appearance of samples, being either transparent, turbid or even dark. A silicon oil case study proves insight into the easy and fast sample ranking by the separation index. Understand the kinetics of separation when calculating the creaming velocity. The concept of comparative shelf-life analysis according to ISO/TR 13097 is demonstrated. The advantage of measuring samples at different temperatures is highlighted for a transparent concentrate. Turbid samples, like o/w- or w/o-emulsions are characterized either accelerated (LUMiSizer) or in real-time by the Separation Analyser LUMiReader®PSA. The case study for dark lubricants again refers to accelerated testing, as applied by the customers.

Lubricants & Coolants, Part 2: Stability & particulate properties of high performance lubricants

The second webinar on lubricants & coolants focuses on stability and particulate properties of high-performance lubricants. A deeper focus is set on three analysis modes as provided by SEPView® software for LUM instruments. Users of the Stability Analyser LUMiFuge® make use of the integral transmission and the instability index, while operators of the Dispersion Analyser LUMiSizer have additional access to the unique creaming velocity distribution as well as to the volume weighted droplet size distribution, including specific parameters like the Sauter diameter. To take high-performance lubricants as an example, the optimum use of each analysis mode is discussed and how it can be used for research & development as well as for process optimization and quality control.

Lubricants & Coolants, Part 1: Cold Rolling


The first part puts the focus on lubricants for cold rolling applications. Three case studies are presented after a detailed introduction of LUM’s patented STEP-Technology® (Space and Time resolved measurement of Extinction Profiles) for particle, droplet and dispersion characterization. The accelerated stability testing of o/w emulsions within few minutes by using a LUMiSizer® instrument is compared with a rather complex emulsion stability index determination lasting for several hours and having a higher economic and environmental impact than the LUM method. The combination of droplet size distributions, direct accelerated stability testing results, both obtained by the same LUMiSizer, with other analytical methods form the basis for a reliable lubricants characterization, making it applicable for even challenging samples. This concept can also to be applied to other kind of formulations, products and applications. In the final case study, qualitative and quantitative comparison by the instability index are discussed. Customers’ experiences including the prediction of long-term rolling oil emulsion stability are subject to a literature review.

Analytical instrumental view on cosmetic prod. phys. stability in real-time & accelerated

This talk was given by Dr. Arnold Uhl during the Forum for Innovations as part of the virtual SEPAWA conference 2021.

Get to know the benefits of real time & accelerated analysis of cosmetic formulations with LUM instruments.

Direct and accelerated stability testing of liquid fabric softeners

At the virtual SEPAWA conference in October 2021 Dr. Arnold Uhl presented in his talk "Direct and accelerated stability testing of liquid fabric softeners" a typical case study from the Home & Personal Care industry.

Learn what LUM instruments can do for you when it comes to R&D as well as quality control of HPC formulations.

Analytical characterization of Crude Oil Separation - Part 2: EOR | Droplet Size Distribution

The second LUM live webinar in the series “Analytical characterization of Crude Oil Separation” focuses on the use of the LUM measuring devices LUMiReader PSA and LUMiSizer in the area of enhanced oil recovery (EOR) and for determining the droplet size distribution in crude oil emulsions.


“Enhanced oil recovery (abbreviated EOR), also called tertiary recovery, is the extraction of crude oil from an oil field that cannot be extracted otherwise. EOR can extract 30% to 60% or more of a reservoir's oil, compared to 20% to 40% using primary and secondary recovery. According to the US Department of Energy, carbon dioxide and water are injected along with one of three EOR techniques: thermal injection, gas injection, and chemical injection. More advanced, speculative EOR techniques are sometimes called quaternary recovery. There are three primary techniques of EOR: gas injection, thermal injection, and chemical injection.” [cited from]


EOR case studies using the LUMiSizer analytical centrifuge and the LUMiReader PSA separation analyzer will be presented during the webinar. To determine the water droplet distribution in waxy crude oil emulsions, users apply the LUMiSizer dispersion analyzer.

Two examples from the literature are introduced in the webinar.


Analytical characterization of Crude Oil Separation I Part 1: DEMULSIFICATION

Watch this new LUM webinar to get answers on the three demulsification key questions: how to quantify quickly and easily the kinetics, the amount and the quality of separated water in crude oil-water emulsions.

Save energy, labour and decision time and run your demulsification tests either in real-time using the LUMiReader PSA or preferrably accelerated using LUMiSizer or LUMiFuge state-of-the-art analytical centrifuges.

This presentation reviews existing successful approaches and provides new data and insights into several aspects of crude oil demulsification. Demulsifier selection and dosage optimization, accelerated bottle test procedures with and without polymer form part of the presentation.

Fast and precise counting and sizing of every nano- and micro-particle in suspensions and emulsions

Prof. Dr. Dr. Lerche, managing director of LUM GmbH, explains how the new LUMiSpoc® quantifies the size distribution of dispersed mono- & very polydisperse particles and counts the concentration of the particle classes by the innovative single particle light scattering (SPLS) technology.

The highly advanced LUMiSpoc® measures simultaneously fore- & sideward light scattering, features an unparalleled resolution & dynamic range, minor dilution factors and a very short measurement time.

SEPAWA Webinar: Direct and accelerated stability testing extended by temperature ramp

After the SEPAWA Conference 2020 was reduced to a solely virtual event due to COVID-19, the live talk by Dr. Arnold Uhl "Direct and accelerated stability testing extended by temperature ramp" was switched to a webinar.
This is the recorded full version.

Dr. Uhl explains an innovative method for accelerated stability testing for personal care and cosmetics products according to ISO/TR13097 and ISO/TR18811.


From pigment to dispersion to coating - comprehensive characterization of TiO2

"From pigment to dispersion to coating - comprehensive characterization of TiO2"
continues the LUM LIVE webinar series and successfully helps our customers to develop, formulate and bring new and improved products to market.
Case studies discuss how to:
- count TiO2 particles.
- examine pulverized TiO2.
- determine particle size distributions of titaniumdioxide in suspensions.
- characterize the formulation stability of titania products in a direct way, accelerated and in real-time.
Benefit by using LUM instruments for your application in the field of batteries, ceramics, food, inks, paper, plastics, sunscreen formulations, wallpaints, etc.

Inform yourself how LUMiFrac® users determined the adhesivestrength of coatings with TiO2 particles on various substrates, such as cement.



Dispersion Stability , Redispersibility & Particle Characterization- Adjuvants | Vaccines | Influenza

"Dispersion Stability , Redispersibility & Particle Characterization- Adjuvants | Vaccines | Influenza" continues the LUM LIVE Webinar series to enable our customers successfully to develop and to
formulate new and improved products and introduce them into the market by using LUM Instruments.
The patented STEP-Technology is applied for the in-situ characterization of particle properties and
the direct characterization of the physical formulation stability of adjuvants and vaccines .
Real-time, real-condition stability studies and the accelerated stability studies are discussed on the
basis of the WHO Guidelines.
A redispersibility case study on aluminum-containing adjuvants is complemented with information on
particle and aggregate sizing, nano particle adsorption and applications related to influenza.
Learn how LUMiReader PSA and LUMiSizer let you follow our slogan The Next STEP in Dispersion
Analysis and Materials Testing.


An innovative concept for real-time and accelerated emulsion and suspension stability testing

In this recorded webinar from COSSMA 2016 you learn how to determine the dispersion stability of cosmetic formulations in real-time vs. accelerated via analytical centrifugation according to current DIN and ISO standards.

Dr. Arnold Uhl presents the technologie using the examples of an oil-water-emulsion and a nail varnish suspension.

STEP-Technology® for Particle Sizing


The composition of cosmetics, HPC, paint, latice and pigment products is often characterized by complex formulations, including many ingredients of manifold nature.

For example, a moisturizing lotion with Titanium dioxide (o/w) contains 14 ingredients.

The determination of particle size distributions of individual ingredients allows for the early detection of deviations in the raw material, prior to their subsequent use in formulation.

These are your benefits of a measurement with STEP-Technology®:

- Particle and droplet sizing over whole sample

- True raw data

- direct physical measurement

- From nm to µm same principle

- Multimodal systems with high resolution

- No restrictions regarding liquid continuous phase (closed cell)

Particle sizing of raw materials using a Dispersion Analyser LUMiSizer® (ISO 13318) is in addition to this instrument‘s use for accelerated stability testing (ISO/TR 13097) of formulated products.

A New Standard in Adhesion & Cohesion Testing


Pioneering technology measures adhesive bonds, tensile strengths, coatings & composites much faster than regular pull-off tests and requires no clamping.

A joint webinar by Prof. Dr. Dr. Dietmar Lerche, Managing Director of LUM GmbH and Uwe Beck from the Federal Institute for Materials Research and Testing (BAM).

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