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Central Analytical Laboratory – Soils and
Fertilizers Research Institute
(Vietnam)
Do Duy Phai
Results of 2018 and 2019 Proficiency Testings
2018 2019
Actions taken
After received the 2018 and 2019 PT results,
we always applied actions as follows:
+ We checked equipment, chemical and
solution concentration before use.
+ We controlled environment conditions such
as temperature room, contaminant and
followed each step of SOP.
+ We used internal reference sample to
control each batch of analysis samples.
Thanks for your attention

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4th SEALNET meeting, item 6 - Case study: Vietnam

  • 1. Central Analytical Laboratory – Soils and Fertilizers Research Institute (Vietnam) Do Duy Phai
  • 2. Results of 2018 and 2019 Proficiency Testings 2018 2019
  • 3. Actions taken After received the 2018 and 2019 PT results, we always applied actions as follows: + We checked equipment, chemical and solution concentration before use. + We controlled environment conditions such as temperature room, contaminant and followed each step of SOP. + We used internal reference sample to control each batch of analysis samples.
  • 4. Thanks for your attention