3. Procedure
Testing was performed on a batch basis with
five modes of operation: (1) still operating alone
for a 24-h period, (2) still connected to the
collector for a 24-h period (all day), and (3) still
connected to the collector during daylight hours
9 am to 5 pm only. These tests were performed
with fresh tap water as feed in order to avoid
corrosive effects on the still and collector mater-
ial. The remaining two modes were: (4) saline
water feed, 35,000 ppm, with the still operating
alone for a 24-h period, and (5) saline water feed
of the same salinity, with the still connected to
the collector for 24 h.