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| 1983 |
Start research on diffusive sampling
at Federal Institute of Technology, Zurich |
| 1988 |
Founding of passam as spin-off enterprise
of ETH Zurich |
| 1993 |
built-up of research lab for diffusive
samplers |
| 1994 |
Establishing passam ltd. |
| 1996 |
Accreditation according EN 45001 |
| 1997 |
Founding Swissino Beijing, Environmental
Technology from Switzerland |
| 1999 |
- Establishing of representative
offices in various countries |
| 2001 |
Accreditation according ISO/IEC 17025 |
Quality Policy
The objective of passam QA program is to manufacture effective diffusive
samplers and to provide analytical data that is reliable, amenable
to statistical evaluation, technically sound and defensible and
is provided in a cost effective and efficient manner.
The emphases are
- Long-term comparability of results
internal procedures and recording enables constistent data over
time
- Treacability
the analytical chain is based on certified reference materials
and treacable to national bodies
- Transparent evaluation of measuring uncertainties
The whole analytical chain is regularly verificated by using controlled
test-atmopheres. Uncertainties are assessed according to GUM
Accreditation
Field of competence
Passam ltd. produces diffusive samplers for ambient
monitoring. Passam provides analytical service in spectrophotometry,
ion chromatography and gas chromatography. The equipment allows
passam to produce controlled test-atmospheres and enables passam
to check an validate diffusive samplers under various laboratory
conditions.
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