ESS Containers Classes
UC CLASS :
UnCertified Containers with Teflon-lined* closure attached. UC Class includes ESS Sample lable.
PC CLASS :
PRE-CLEANED CERTIFIED Containers with Teflon-lined* enclusure attached. PC Certification is provided with each case. PC Class includes with ESS sample label.
QC CLASS :
QUALITY CERTIFIED precleaned containers with TeflonÂ® -lined closures attached are analyzed by independent, certified laboratories. QC Certification is available online. QC Class includes with ESS Sample label with printed lot number. All glass container include TeflonÂ® -lined closures there is no requirement for TeflonÂ® -lined on plastic containers
ESSâ€™ cleaning procedures are based on the U.S. EPA
â€Specifications and Guidance for Contaminated-Free Sample Containers