Two teens using a laptop interfaced sensor to measure the water quality of a stream
Teenager high school students using a laptop interfaced sensor to test stream water for chemical indicators of quality such as chlorine nitrates phosphates pH iron etc The site is Ringwood State Park in northern New Jersey
Size: 5022px × 3486px
Photo credit: © Martin Shields / Alamy / Afripics
License: Licensed
Model Released: Yes
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