1. Is harmonisation of performance assessment in non-quantitative proficiency testing possible/necessary?

   • Ulla Tiikkainen
   • Laura Ciaralli
   • Erika Sarkany

   Review Paper 21 January 2022 Pages: 1 - 8

   

2. Assessment of homogeneity and stability of new reference material of passion-flower fruits for proficiency testing: Pesticide residues in purple passion fruit (Passiflora pinnatistipula)

   • Maira A. Paredes
   • Sergio A. González-Mónico
   • Jairo A. Guerrero Dallos

   General Paper 20 January 2022 Pages: 9 - 17

   

3. Meaningful expression of uncertainty in measurement

   • Maurice Cox
   • Anthony O’Hagan

   Discussion Forum Open access 18 January 2022 Pages: 19 - 37

   

4. Facing a shortage of the Latin letters for the prospective new SI symbols: alternative proposal for the new SI prefixes

   • Dominik Pražák

   Discussion Forum 04 January 2022 Pages: 39 - 41

5. Assessing the performances of on-line analyzers can greatly improve free chlorine monitoring in drinking water

   • Nathalie Guigues
   • Julien Chabrol
   • Sophie Vaslin-Reimann

   Practitioner's Report 13 January 2022 Pages: 43 - 53