Excellent

no notable issues

Good

some minor changes in condition, or accretions, dust, etc. which would not require conservation assessment

Fair

more obvious condition issues which could warrant conservation assessment, but the object is still viable for display

Poor

significant condition issues which require a conservation assessment to determine whether work is viable for display, or at risk of more serious deterioration

None

for works in excellent condition

Low

for works in good condition, which might require a cleaning or monitoring for changing condition

Medium

for works in fair condition which might need minor conservation or cleaning prior to display

High

work needs conservation for preservation of at-risk objects to restore or or prevent further deterioration