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SPF – The Swiss testing laboratory for solar energy and heating appliances and for durability, optical and thermal properties of building materials

We test, certify and assess components and systems for solar technologies and heating appliances in the building sector. All solar thermal certifications
(Solar Keymark, SRCC™, EN 12975, SAI-Global, etc.) can be obtained from our laboratory. Furthermore, we offer all kind of durability tests and measurements of optical and thermal properties of the building shell.
We are happy to support your projects in research and quality assurance with our know-how and our dedicated infrastructure.

SPF testing is accredited according to ISO 17025 to guarantee the highest level of professional expertise and confidentiality.

Head of Testing


Dr. Andreas Bohren

Tel. +41 (0)55 222 4825


© 2019 Institut für Solartechnik · Oberseestrasse 10 · CH-8640 Rapperswil · Tel. +41 55 222 48 21 · infonospam@nospam spf.ch | Impressum | AGB