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MPSS evaluation software with R

Category Information Author WCCAP Date 14 Mar 2026 Read time 1:00
Dear community,

you can find the actual version of the "MPSS evaluation software with R" as a download under "Measurement Guidelines" -> "Particle number size distribution - mobility diameter 10-800 nm". We are constantly working to improve the software. Please use only the approved version by WCCAP to avoid any problems or mistakes during the evaluation process.

First information about the software were given during the last community meeting on February 12th, 2026. Please have a look at the presentation in the section "Meetings & Minutes".

your WCCAP team

Aerosol In-Situ Community Meeting

Category Meeting Author CAIS-ECAC Date 08 Mar 2026 Read time -
Event:
Invitation to Aerosol In-Situ Community Meeting WCCAP
Topic:
09:00-09:05 Welcome & Introduction
09:05-09:35 Harmonized procedure for data correction from nephelometers and filter based absorption photometers
09:35-10:05 Quality control for nephelometers – real user example
10:05-10:10 Announcement of the upcoming OGTAC-CC community meeting in April and the next hands-on training workshop in May 2026
10:10-11:00 Questions and Discussion
Date:
12 March 2026
Time:
9 - 11 a.m. CET
Info:
link is provided in the community
Location:
online meeting
The course will be held for 5 days from Monday 18th to Friday 22nd of May 2026 at TROPOS ACD in Leipzig. The number of participants is limited to 8. The course is free of charge. Participants have to cover only their travel and accommodation costs.

Topic:
Theory and practice – Offline chromatographic (LC-MS and GC-MS) determination of organic tracer compounds and organic and elemental carbon (OC/EC) measurements in particulate matter collected on filters.

Subscription via email to ogtac-cc[at]tropos.de (registration deadline May 1st)
For any questions don´t hesitate to contact Dr. Falk Mothes (mothes[at]tropos.de).

Invitation to the 2nd OGTAC-CC community meeting

Category Meeting Author OGTAC-CC Date 08 Mar 2026 Read time -
Event:
Invitation to the 2nd OGTAC-CC community meeting (online)
Topic:
Ongoing and planned activities of the calibration centre for particulate organics
Status of the technical requirements and measurement guidelines
Offline data workflow
Past, current and planned inter-laboratory comparisons
Status labelling
Date:
28 April, 2026
Time:
1-4 p.m. CEST
Info:
Registration via brief notice to mothes[at]tropos.de
Location:
online meeting
ABOUT US
CONTACT
OFFICE HOURS
In the frame of the European Research Infrastructure ACTRIS-ERIC, the CAIS-ECAC is one of the Central Facilities for the ACTRIS National Facilities and external users worldwide. CAIS-ECAC’s mission is to offer operational support for quality assured and controlled physical and chemical aerosol in situ measurements & sampling, to conduct traceable instrument calibration, and to perform laboratory analysis of aerosol samples.
CAIS-ECAC

director: Alfred Wiedensohler
office: Stephanie Schüttauf

Leibniz Institute for Tropospheric Research
Permoserstraße 15
04318 Leipzig
e-mail: wccap[@]tropos.de
Monday, Tuesday, Wednesday, Thursday
9.00am – 12.00pm, 1.00pm – 4.00pm

Friday
9.00am – 12.00pm, 1.00pm – 2.00pm

Saturday , Sunday
closed

Center for Aerosol In-Situ - European Center for Aerosol Caliibration and Characterization
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