The event addressed to Section members and other interested persons took place on 7 November at the RADWAG headquarters.

During the event, the following issues were discussed, in the form of papers:

• Accreditation of reference material manufacturers in the context of PN-EN ISO 17034:2017-03
• Technical requirements for the production of reference materials in PN-EN ISO 17034:2017-03
• Equipment supervision, calibration and verification
• Filter weighing methods
• Balances in the laboratory.

Most of the papers were delivered by our company employees.

The theoretical part was followed by practical workshops in subgroups on weighing and pipetting in the laboratory.

We were pleased to host members of the POLLAB Club Environmental Section; thank you very much for coming.