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 µm. www.malvern.com.
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
Tel: +44 (0) 1480 471117
Fax: +44 (0) 1480 471118
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
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.
Arrowhead to Present at BioCentury's NewsMakers in the Biotech Industry Conference September 19th, 2014
SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014
Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014
New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014
IEEE International Electron Devices Meeting To Celebrate 60th Anniversary as The Leading Technical Conference for Advanced Semiconductor Devices September 18th, 2014
FEI Opens New Technology Center in Czech Republic: FEI expands its presence in Brno with the opening of a new, larger facility September 18th, 2014
New NPZ100-403 Piezo Stage from nPoint Inc. September 17th, 2014
Researchers Create World’s Largest DNA Origami September 11th, 2014
Sunblock poses potential hazard to sea life August 20th, 2014
AQUANOVA receives Technology Leadership Award 2014 FROST & SULLIVAN honors NovaSOL® Technology again August 12th, 2014
Nanotechnology used in sunscreens: a Mexican achievement May 14th, 2014
Production of Nanocapsule from Sea-Buckthorn Extract in Iran May 3rd, 2014