Dc. Zumwalt et al., A WATER-RENEWAL SYSTEM THAT ACCURATELY DELIVERS SMALL VOLUMES OF WATER TO EXPOSURE CHAMBERS, Environmental toxicology and chemistry, 13(8), 1994, pp. 1311-1314
This paper describes a system that can accurately deliver small volume
s of water (50 ml per cycle) to eight 300-ml beakers. The system is in
expensive (<$100), easy to build (<8 h), and easy to calibrate (<15 mi
n), and accurately delivers small volumes of water (<5% variability).