eutech-instruments cadmium epoxy ユーザーズマニュアル

Instruction Manual

Cadmium Electrode

19

incorrect reference

use recommended

filling solution

filling solution

Low Slope or

standards contaminated

prepare fresh

No Slope

or incorrectly made

standards

ISA not used

use recommended ISA

standard used as ISA

use ISA

electrode exposed

check section

to complexing agents

entitled

Precipitation

and Complexation

air bubble on

remove bubble by

membrane

redipping probe

"Incorrect Answer"

incorrect scaling

plot millivolts on

(but calibration

of semi-log paper

the linear axis. On

curve is good)

the log axis, be sure

concentration

numbers

within

each

decade

are

increasing with

increasing

concentration.

incorrect sign

be sure to note sign of

millivolt

number

correctly

incorrect standards

prepare fresh standards

wrong units used

apply correct

conversion factor:

10

-3

M = 112 ppm as Cd

+2

complexing agents

check section entitled

in sample

Precipitation and

Complexation;

use titration