Image 7 of 19
Date: 11/19/06 3:52 PM
Disolved oxygen (DO) test - Jerry turns the bottle to help disolve the tablets. The oxygen level was good.
Focal length: 24.0mm | Exposure time: 1/100s | Aperture: 5.0 | ISO: 200
Metering mode: Multi-segment | Camera model: NIKON D70s