REGULATIONS, LEGISLATION & TESTING
The Atlas SunTest CPS+ Solar Simulator provides compliance by using an aircooled 1 500W xenon lamp in combination with an optical daylight filter. Additional IR-reflecting mirrors reduce a great portion of unwanted IR heat waves
The UV-2000S is designed for quick
Manual preparation of a sunscreen on a PMMA plate before UV exposure (Image courtesy of Labsphere)
cosmetics testing when both industries
measurement to avoid temperature control
realised its benefits as a compact, reliable
concerns of the plates during assessment.
solar simulator.
Well-designed instruments will give the same
‘The irradiance within the SunTest is
measurements of absorbance and thus the
automatically controlled by a wideband
same SPF and UVAPF measurements when
300 to 800nm dimmable light monitor
measuring the same sample. This was shown
inside the chamber. The test temperature of
in a published study conducted by Labsphere,
between 25 and 35°C is controlled even at
detailing a comparison of measurements
the highest irradiance setting by a SunCool
on the UV-2000S using PPMA plates from
refrigeration unit, which feeds in chilled
Helioscreen doped with UV filters. The UV- 2 000S
air,’ Dr Rahäuser explains.
produced corresponding results with a
The SunTray specimen
competitor instrument that incorporates a
handling accessory is best
different optical design.
suited to complete the
‘The UV-2000S is compliant with all the
ideal test setup. This is a
normalisation requirements of ISO, Colipa, FDA
sample exchanger unit
and Boots, which the user can choose. The
located beneath the
instrument is also maintenance-free and comes
SunTest which includes a
with a kit to verify its performance as needed,’
holder for eight standard
adds Hengstberger.
PMMA plates. It allows for fast and safe exchanging
A trusted UV test chamber
of samples during the
The SunTest CPS+ Solar Simulator from Atlas
SunTest in continuous
MTT is another instrument that is crucial to
light mode. •
DID YOU KNOW?
It is necessary to follow a standardised protocol when preparing sunscreen samples for testing as prescribed by the methodology of normalisation requirements. This can become laborious, which is why a robotic Spreadmaster has been developed to automate the repeatable process. The Spreadmaster and Thermaster – a temperature stability control instrument – are also available from MIT.
the in vitro UVA test method and used in the irradiation phase. Originally developed for the accelerated ageing testing of plastics and other materials, Atlas quickly optimised the instrument for use in pharmaceutical and
Atlas MTT – www.atlas-mts.com Measuring Instruments Technology – www.marmit.co.za
Measuring Instruments Technology
The UV-2000S is used for SPF-testing of sunscreens. The instrument is: . Easy to install . Easy to use . Designed for quick measurements . Compliant with all the normalisation requirements, including ISO, Colipa, FDA, Boots with guided user-friendly software . Maintenance-free (a kit is delivered to verify as needed the performance of the instrument) Tel: +27 12 349 5191 Fax: +27 12 349 5190 Cell: +27 82 784 2011 Email: info@marmit.co.za www.marmit.co.za
P C Review | AUGUST 2017 |
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