Form This specification defines limits of variation for determining acceptability of the composition of cast or wrought titanium and titanium alloy parts and material acquired from a producer. Application When specifically referenced in the material specification@ the purchaser may apply check analysis limits to determine the acceptability of parts and materials at purchaser final acceptance or verification testing operation. Check analysis limits are not for producers use at producer's acceptance testing. Composition of parts and materials must conform to the limits of the material specification. Check limits are not permitted for ladle or ingot analysis.