Final answer:
When the inspector or purchaser doubts the chemistry of a material, additional testing or verification may be required.
Step-by-step explanation:
When the inspector or purchaser doubts that a material meets the chemistry of the quoted specification, they may require additional testing or verification. This can involve sending samples of the material to a laboratory for analysis. The laboratory will perform tests to determine if the composition of the material matches the specified chemistry. If there are any discrepancies, the inspector or purchaser may request further information or take appropriate action based on the results.