Liquid Waste (chemical inactivation) - Course for biosafety officers (BSO)

Curriculum Biosafety - An initiative of the FOEN, the FOPH, the SUVA and the SECB

Liquid Waste (chemical inactivation) - Course for biosafety officers (BSO)

The demands on the BSO are high: they are the contact person for all questions of biosafety internally vis-à-vis colleagues and the management and externally vis-à-vis the authorities. BSOs ideally have a higher professional education, if possible with a university degree, comprehensive laboratory experience and knowledge of all biosafety issues. They have negotiating skills and assertiveness.

Biosafety has the purpose of protecting humans and the environment through the handling of genetically modified, pathogenic or alien organisms. 

Since 1999, the Containment Ordinance and the Ordinance on the Protection of Workers against Risks from Microorganisms have regulated the handling of organisms, in particular genetically modified and pathogenic organisms. These ordinances require, among other things, that a person responsible for biological safety be designated for such activities, the so-called Biosafety Officer (BSO).

Will be carried out biennially, next event in 2025.

Course language

  • Englisch

Taking into account the respective safety level, the organisms used and the technical equipment, a biosafety officer (BSO) is responsible for drawing up an operational concept for the biological safety laboratory based on the legal foundations, in cooperation with the bodies involved. He/she is responsible for information, awareness raising, further training and advice on biological safety for the staff working on the premises.

  • Future or active Biosafety Officers (BSO)

Advanced subject-specific training Inactivation of liquids 

  • Legal base
  • Advantages / disadvantages in comparison to autoclaving
  • Chemical substances: approval, host range, environmental impact, worker safety
  • Definitions (D-value, inactivation, disinfection etc.)
  • Development of a new chemical disinfaction process 
  • Shelf life of a disinfectant
  • Variation of parameters such as duration of exposure, concentration of disinfectant etc.
  • Inactivation in "worst case“ scenarios
  • Evaluation of the process
  • Chemical, physical indicators and / or biological indicators
  • Testing of efficacy, necessary controls
  • Questions and discussion

Schweizerischer Verband der Trockensteinmaurer SVTSM, Stefan Meier
Schweizerischer Verband der Trockensteinmaurer SVTSM, Christian Feuz
Stonewalls, Gerhard Stoll
Kurt Furrer
Schweizerischer Verband der Trockensteinmaurer SVTSM, Sylvain Ursenbacher

Number of participants

  • Minimum: 12
  • Maximum: 25


  • CHF 350
  • The price includes course documentation, refreshments during breaks and lunch.
  • Networking and exchange of experiences during breaks and lunch are important for the learning process, therefore they are organized by sanu and are part of the course.


  • At the end of the course you will receive a certificate of participation.

Registration deadline

  • 12 October 2025
  • Due to the limited number of participants, registrations will be considered in the order in which they are received. 
  • At the latest two weeks before the course starts, you will receive a confirmation, further information about the course and the invoice.


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