3
II. Structure and Installation
1. Host structure
2. Installation
1) After unpacking, put the instrument in a stable laboratory bench. Then check whether
the parts are damaged or not, and whether the random accessories are complete.
2) Connect the power supply.
Note
：
The instrument must be adequately grounded.
III. Preparation Work
1. Preparation solution
Six kinds
：
Neutralizer(Ethanol—KOH) solution
、
Extraction
、
Standard acid solution
、
BTB
aqueous solution
、
Washing solution
、
Anhydrous ethanol
。
（
1
）
Neutralizer(Ethanol—KOH): The white solid in the glass bottle labeled KOH supplied
with the instrument transfer to the glass bottle with the Ethanol-KOH label as much as
possible. And then inject about 100 ml of Anhydrous Ethanol in the glass and shake it
completely so that it is completely dissolved. At last, set aside for a day and night.
（
2
）
Extraction liquid configuration:
①
Prepare a 1500ml container (A) and a 300ml reaction cup (B), pour 500ml isopropyl
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