The document outlines the implementation plan for national proficiency testing at the Soil and Plant Analysis Laboratory (SPAL) in Myanmar, established in 2008 and upgraded through an ACIAR project from 2013-2017. Key components include the harmonization of methods, readiness to provide proficiency testing samples, and coordination among various laboratories, including those from agricultural universities and fertilizer companies. Lessons learned emphasize the importance of using high-quality chemicals and proper procedures to reduce contamination.