Table of Contents
Advertisement
VOLATILE ACIDS,
9.
Press:
TIMER
ENTER
A 3-minute reaction
period will begin.
13.
Add 10 mL of Ferric
Chloride Sulfuric Acid
Solution to each cell.
Cap and invert
to mix.
continued
10.
When the timer
beeps, cool solutions to
25 °C (until cells feel
cool) with running tap
water. Then dry the cells
with a soft cloth.
14.
Add 10 mL of
deionized water to each
cell. Cap and invert
to mix.
11.
Pipet 0.5 mL of
Hydroxylamine
Hydrochloride Solution
into each cell. Swirl
to mix.
15.
The display will
show: 3:00 TIMER 2
Press:
ENTER
A 3-minute reaction
period will begin.
Note: After this three-
minute reaction period,
proceed immediately
through steps 16-19.
442
12.
Pipet 2.0 mL of
4.5 N Sodium
Hydroxide Standard
Solution into each cell.
Cap and invert to mix.
16.
When the timer
beeps, immediately
place the blank into the
cell holder. Tightly
cover the sample cell
with the instrument cap.
Hide quick links:
Advertisement
Table of Contents
