Stability and shelf-life are key parameters in formulation studies. TURBISCAN is the first patented technology to analyze destabilization mechanisms in concentrated media. Creaming, sedimentation, agglomeration, aggregation, and coalescence are detected early without dilution or stress. Stability kinetics and index are provided for efficient sample analysis.
Multiple light scattering (MLS) consists of sending photons (NIR light source, 880nm) into the sample. These photons, after being scattered many times by the particles (or droplets) in the dispersion emerge from the sample and are detected by the 2 detectors of the TURBISCAN™ reading head:
Transmission (T) for non-opaque samples (0° from light source)
Backscattering (BS) for opaque samples (135° from the light source)
Backscattering is directly related to the photon transport mean free path. Thus Backscattering intensity depends on particle size and concentration.
The combination of Backscattering and Transmission sensors with a vertical scanner enables to detect physical heterogeneities (size increase or local concentration change) over the whole sample height with a vertical resolution up to 20µm. Thus, nascent destabilization phenomenon can be detected in any sample locations up to 200 times faster than visual tests.
Backscattering or Transmission profiles (i.e. signal over sample height) are recorded at different time intervals to report kinetic stability. Stability kinetics are calculated over the whole sample height for a global stability assessment or on specific zone (bottom / middle / top) depending on the stability criteria. TURBISCAN Stability Index (TSI) is calculated for easy and accurate stability reporting. Patented sample positioning enables to guaranty an optimal repeatability and reproducibility.
Benefits and key features
Migration Analysis
Local variation of light intensity corresponds to phases formation.
Phase thickness kinetics
Sedimentation rate
Creaming rate
Particles migration speed
Hydrodynamic diameter
Size variation Analysis
Global variation of light intensity corresponds to size increase.
Size kinetics
Mean diameter
Agglomeration rate
Coalescence rate
Dispersibility ratio
Turbiscan Stability Index (TSI)
Based directly on the raw data, this unique number takes all destabilisation into account, providing you with a powerful tool to rank & compare all your formulas in just one-click. It is a key parameter for easy classification of samples regarding to their stability. Determining shelf-life of your products has never been easier!
No Mechanical Stress
When it comes to shelf-life, and real-life evolution of the end-products, it makes no sense to apply a mechanical stress to a sample. Our measurements are always performed at rest, without any external stress. That way, you can be sure that the results you get are representative of what will happen in real life, only detected way earlier!
Main Advantages
No Sample preparation
200x faster than conventional tests
Quantification of stability
No Sample dilution
Wide range of concentration (10-4 – 95%)
Wide range of size (10 nm – 1,000 µm)
References and norms
/1/ DIN ISO 18748 /2/ Partikelwelt 18; p. 16-19; “Vorhersage der Langzeitstabilität von polymerstabilisierten O/W-Emulsionen mittels statischer Mehrfachlichtstreuung” (only available in German) /3/ Particle World 20; p. 16-17; “Fast determination of stability and packing in inkjet inks – Examination of different pigments”
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeated visits. By clicking “Accept”, you consent to the use of the cookies explicitly. Visit Cookie Settings to get more information about the cookies used on our website.
This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Cookie
Type
Duration
Description
apbct_cookies_test
session
session
Сookie to validate other cookies, so they can’t be spoofed.
apbct_headless
session
session
apbct_page_hits
session
session
apbct_pixel_url
session
session
apbct_site_landing_ts
session
session
apbct_site_referer
session
3 Days
apbct_timestamp
session
session
apbct_urls
persistent
3 Days
cookielawinfo-checkbox-advertisement
persistent
1 year
This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Advertisement".
cookielawinfo-checkbox-analytics
persistent
1 year
This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-necessary
persistent
11 months
This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
ct_checkjs
session
session
Spam protection: Stores dynamic variables from the browser
ct_fkp_timestamp
session
session
Spam protection: Stores current time
ct_pointer_data
session
session
Spam protection: Stores dynamic variables from the browser
ct_ps_timestamp
session
session
Spam protection: Stores current time
ct_swf_pass_key
persistent
persistent
ct_timezone
session
session
Spam protection: saves the visit time
mc_session_ids[default]
1
session
Captcha plugin for website contact form
mc_session_ids[multi][0]
1
session
Captcha plugin for website contact form
mc_session_ids[multi][1]
1
session
Captcha plugin for website contact form
mc_session_ids[multi][2]
1
session
Captcha plugin for website contact form
mc_session_ids[multi][3]
1
session
Captcha plugin for website contact form
mc_session_ids[multi][4]
1
session
Captcha plugin for website contact form
qtrans_front_language
persistent
1 year
This cookie is used by our translation plugin "qTranslate-X" to offer our site in German and English and to save your language preferences.
viewed_cookie_policy
persistent
11 months
The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
This cookie is installed by Google Analytics. The cookie is used to calculate visitor, session, camapign data and keep track of site usage for the site's analytics report. The cookies store information anonymously and assigns a randoly generated number to identify unique visitors.
_gid
persistent
1 day
This cookie is installed by Google Analytics. The cookie is used to store information of how visitors use a website and helps in creating an analytics report of how the wbsite is doing. The data collected including the number visitors, the source where they have come from, and the pages viisted in an anonymous form.