Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


Home > Press > Zetasizer Nano monitors UV Pearls for skin protection

Zetasizer Nano monitors UV Pearls for skin protection

Posted on October 30, 2006

At nano engineering company Sol-Gel Technologies (Bet Shemesh, Israel), Malvern's Zetasizer Nano particle characterization system is proving to be an essential tool in the production of a unique product for encapsulating UV filters. The Zetasizer Nano is used to measure the particle size distribution of the company's UV Pearls product, both for process control and as part of the QC specifications of the final materials. The system was selected because, of all the instruments evaluated, it gave the most reproducible results across the narrow size ranges required, from 300 nm to 2 microns.

Dr Ofer Toledano, Sol-Gel Technologies' R&D Manager, explains the importance of controlling particle size: "UV filters are widely used in sunscreens, but can themselves cause skin damage. Our process encapsulates the UV-filter in a glass bead, retaining its UV protective properties, but preventing direct contact with the skin. If, on the one hand, the particle size is too large, the sun protection factor is reduced. If, on the other hand, it is too small, skin penetration may occur."

Production of the UV Pearls entails an emulsification process, followed by encapsulation and dispersion. The particle size distribution of the dispersion must conform to strict specifications within a narrow range. Particles larger than 2 microns in diameter may result in non-uniform coverage of the skin since gaps between the particles will allow UV penetration.

Sol-Gel's UV Pearls are marketed by Merck KgaA and is used in a variety of sunscreen products around the world.

Malvern's Zetasizer Nano series simplifies the measurement of particle size, stability characterization using zeta potential, and molecular weight, for a wide range of dispersions, emulsions and molecules in solution. It is the method of choice for nano-particle applications from routine colloid size measurements to the investigation of particulates at the leading edge of materials research. Patented technologies ensure optimum performance for particle size measurement over the range 0.6 to 6000 nm, molecular weight measurement from 1 x 103 to 2 x 107 Daltons and the zeta potential of particles from 5 nm to 10 m.


About Sol-Gel Technologies Ltd.:
Sol-Gel Technologies Ltd. is a groundbreaking nanoengineering company that has developed proprietary platform technology with potential commercial applications in many different markets. This technology, discovered by Professor David Avnir from the Hebrew University of Jerusalem, allows a vast range of active ingredients to be encased in highly transparent silica glass matrices or nanospheres at room temperature. The ingredients can thereby be safely isolated and their delivery can be controlled, a potentially valuable innovation for the pharmaceutical and cosmetic markets. The company has received exclusive worldwide licenses and patents, plus patents pending, for this technology. Sol-Gel was founded in 1997. It is based in Israel and in the USA. This fast growing company includes a team of distinguished scientists, engineers and business managers and operates a state-of-the-art GMP plant capable of producing commercial quantities of its nanotechnology products. Sol-Gel's first commercial product, UV-Pearls, is already being sold to some of the world's leading cosmetic manufacturers.

For more information, please click here.

About Malvern Instruments:
Malvern Instruments is a global company that develops, manufactures and markets advanced analytical systems used in characterizing a wide variety of materials, from bulk powders to the latest nanomaterials and delicate macromolecules. Innovative technologies and powerful software produce systems that deliver industrially relevant data enabling customers to make the connection between micro (eg particle size) and macro (bulk) material properties (rheology) and chemical composition (chemical imaging). Malvern laboratory, on-line and in-line solutions are proven in sectors from cement to pharmaceuticals and support the understanding, improvement and optimization of many industrial processes.

Headquartered in Malvern, UK, the company has subsidiary organizations in all major European markets, North America, China, Korea and Japan, key partnerships in India, a global distributor network and a number of applications laboratories around the world.

For more information, please click here.

For more information, please contact:
Trish Appleton, Kapler Communications
Suite 2, Cressner House
12 Huntingdon Street, St Neots
Cambridgeshire UK
PE19 1BD
Tel: +44 (0) 1480 471117
Fax: +44 (0) 1480 471118

USA contact:
Marisa Fraser, Malvern Instruments Inc
10 Southville Road
Southborough, MA 01772, USA
Tel: +1 508 480 0200
Fax: +1 508 460 9692

Please send sales enquiries to:
Alison Vines, Malvern Instruments Ltd
Enigma Business Park, Grovewood Road
Malvern, Worcestershire UK
WR14 1XZ
Tel: +44 (0) 1684 892456
Fax: +44 (0) 1684 892789

Copyright Malvern Instruments

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press


Medical and aerospace electronics powered by Picosun ALD November 26th, 2015

Scientists design a QKD-based quantum private query with no failure November 25th, 2015

MIT mathematicians identify limits to heat flow at the nanoscale: New formula identifies limits to nanoscale heat transfer, may help optimize devices that convert heat to electricity November 25th, 2015

Physicists explain the unusual behavior of strongly disordered superconductors: Using a theory they developed previously, the scientists have linked superconducting carrier density with the quantum properties of a substance November 25th, 2015


Medical and aerospace electronics powered by Picosun ALD November 26th, 2015

Using light-force to study single molecules November 23rd, 2015

Breakthrough allows tracking of single molecules in 3-D with nanoscale accuracy:New method builds on Nobel Prize-winning technique, with exciting implications for understanding the inner workings of cells and neurons November 23rd, 2015

UCLA nanoscientists develop safer, faster way to remove pollutants from water November 23rd, 2015

Personal Care

Ceapro Presents Unique Advantages of Its Disruptive Pressurized Gas Expanded Technology (PGX) at 2015 Composites at Lake Louise November 10th, 2015

Nanofilm Introduces Clarity AR Lens Cleaner for Anti-Reflective Superhydrophobic Lenses August 20th, 2015

Sediment dwelling creatures at risk from nanoparticles in common household products August 13th, 2015

Engineering a better 'Do: Purdue researchers are learning how August 4th, 2015

The latest news from around the world, FREE

  Premium Products
Only the news you want to read!
 Learn More
University Technology Transfer & Patents
 Learn More
Full-service, expert consulting
 Learn More

Nanotechnology Now Featured Books


The Hunger Project

Car Brands
Buy website traffic