Table of Contents
Advertisement
CA-200
Section 4: Measurement Preparation
4-1. Cautions
4-1-1. Caution in handling reagents
Do not inhale reagent and touch it. Use protective glasses for safety.
If reagent touches your skin, wash it immediately with much water.
Reagents contain toxic components (such as sulfur dioxide and iodide) and ventilate your room
sufficiently. Take care of environment pollution in the disposal of waste solution.
Keep reagent airtightly to prevent moisture from coming in.
4-1-2. Caution in measurement
(1) The moisture measurement range of Model CA-200 is 10μg to 100mgH
(different by titrant factor)
To measure accurately and efficiently, take samples by referring to Table 4-1.
Moisture
(2) When changing silica gel and reagents, spread attached exclusive grease lightly on
contacting part to prevent a titration cell from sticking to each part. (every week)
If the titration cell is left for a long time, contacting part is stick to the titration cell and can't
separate from it.
(3) If you don't use a titration cell for a long time, remove parts, wash, and dry, and keep them
in a desiccator.
(4) To measure trace of moisture accurately, use exclusive grease which contains a little
moisture and is slightly soluble.
Sampling weight
100%
About 10mg
50%
20mg
to
100mg to 20mg
10 %
300mg to 100mg
1 %
Table 4-1. Moisture content examples
Moisture
0.1%
10mg
0.01%
0.001 %
0.0001 %
4-1
Section 4: Measurement Preparation
O.
2
Sampling weight
1g to 300mg
5g to 1g
5g to 10g
10g or more
Advertisement
Table of Contents
