And on a very clear night time when the environment looks to disappear outer space touches the yard and bats are like flakes of nightsky peeled off and fluttering about and someone's rest room water heading down the pipe right before they go to bed is all the clock I need to have. ASTM. 2020. ASTM D1976-20-Standard Test Method for Elements in Water by Inductively-Coupled Plasma Atomic Emission Spectroscopy.