Background: The International Organization for Standardization has established a number of standards relating to solar energy equipment. For example, ISO 9050 relates to glass in building while ISO 10217 relates to the materials used in solar water heaters.
Question: What is the name of the standard related to the materials used in solar water heaters?
Answer:<extra_id_0>.
<extra_id_0> ISO 10217<extra_id_1>