ISO 7027-1:2016 has been accepted as an alternative for the Performance Verification testing equipment and method requirements of Feature 30, Part 1.
Please note that ISO 7027-compliant devices must be capable of displaying results in NTU and all results must be reported in NTU.
Also note that this equivalency does not authorize project teams to select, request, or dispute the specific testing methodology used during performance testing for a project.