Answer :
Final answer:
The ASTM standards involved in the use and calibration of air meter bowls are not specified in the question. They could be any among various ASTM standards, including common ones such as ASTM C231 or ASTM E100.
Explanation:
The ASTM standards refer to American Society for Testing and Materials standards, which are used globally to improve product quality and safety. In relation to air meter bowls, it appears two ASTM specifications are being referred to. These could be a multitude of various standards depending on the specific application of the air meter bowls, unfortunately without explicit mention of these standards, an accurate reply cannot be provided. Some common ones could be ASTM C231 for testing air content in freshly mixed concrete or ASTM E100 for volumetric flasks. ASTM ensures these tools and equipment meet the required specifications.
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