peCHECK Reference Materials are cost effective performance evaluation standards for routine analysis compliance testing. These standards are available for minerals, nutrients, and solids in water/wastewater matrices and are certified through a comprehensive round-robin study providing independent verification from multiple laboratories.

• 20 ml vials. No pipetting necessary. Just dilute to volume. Each standard dilutes to 1 L.
  • Eliminate a source of potential error, save time with single stop preparation.
  
  
• Certificate of Analysis listing consensus values as well as confidence and tolerance intervals.
  • Monitor lab performance in a cost effective, simple manner.
  
  
• Prepared in large batches
  • Same lot number available time after time allows the possibility of control charting.