eutech-instruments carbon dioxide gas User Manual
Instruction Manual
Carbon Dioxide Electrode
18
incorrect internal filling
refill outer body of electrode
solution
using filling solution shipped
with electrode
total sample level
dilute sample of dissolved
species above 1M
electrode in sample
reduce surface area-to-
too long; CO
2
loss
volume ratio, slow down rate
of stirring, avoid high
temperatures
membrane failure
replace membrane
(wet, perforation, discoloration)
samples and standards
allow samples and standards
not at constant
to come to room temperature
temperature
before use
heat generated by
place insulating material
magnetic stirrer
between stirrer and beaker
defective inner body
refer to
Checking the
Electrode Inner Body
electrode exposed to
hold electrode by outer body
air for extended period
and pull on electrode cable.
Internal filling solution will
flow under membrane and
restore electrode response
Low Slope or No Slope
standards contaminated
prepare fresh standards
or incorrectly made
buffer
not
used use
recommended
buffer
standard used as
use buffer
buffer
electrode exposed
hold electrode by outer body
to air for extended
and pull on electrode cable.
period
Internal filling solution will
flow under membrane and
restore electrode response
membrane failure
replace membrane
(wet, perforation, discoloration)
defective inner body
refer to
Checking the
Electrode Inner Body