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Proficiency Testing (PT) scheme participation allows laboratories to:

  • objectively monitor and improve the quality of their measurement results in terms of accuracy and comparability,
  • independently demonstrate the continued competency of their analytical staff, and
  • demonstrate the effective maintenance of quality assurance systems.​
NMISA is committed to supporting laboratories through the provision of PT schemes that afford participating laboratories the opportunity to regularly demonstrate their analytical measurement competence. 

Planned PT schemes and ILCs schedule for 2026/2027​

​Description ​​Amount Fraction
Registration deadline Dispatch date
Results Submission deadline
Final Report
Cost (Rands) 0% VAT
​​H2S in
nitrogen
10 to 100 µmol.mol-1

20 Sept 2026

31 Oct 2026

30 Nov 2026

​20 Dec 2026
​R 10 650
SO2 in
nitrogen
10 to100
μmol.mol-1

20 Sept 2026

31 Oct 2026

30 Nov 2026

20 Dec 2026

​R 10 650
SO2 in
nitrogen
​100  to 1 000 μmol.mol-1

20 Sept 2026

31 Oct 2026​

30 Nov 2026

20 Dec 2026

​R 10 650
CH4 in
nitrogen​
1 to 10 %
mol.mol-1​​​​

20 Oct 2026

30 Nov 2026

20 Dec 2026

20 Jan 2027

​R 10 650
​ CO2 in nitrogen0 to 500
nmol.mol-1

20 Oct 2026​

30 Nov 2027

20 Dec 2027

20 Jan 2027​​​

​R 10 650
​​​​​​
*registration deadline 2 weeks before dispatch date, registration open to any testing laboratory and participation is confirmed with a purchase order or proof of payment. Any changes to the dispatch date are communicated with registered participants timeously
** Prices exclude delivery​

​Download full version NMISA Gas PT Protocol 2026-30​​​

Register for these PTs by sending us an e-mail at pt@nmisa.org




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