Hach Polymetron 9610sc SiO2 Handbuch Seite 8

Items to collect:
• Concentrated sulfuric acid, H
• Graduated cylinder, 100 mL
• Volumetric flask, 2 L
• Laboratory funnel
• Deionized water, 2 L
• Analyzer Bottle #R4
1. Add approximately half of the deionized water to the volumetric flask.
2. Measure 90 mL of sulfuric acid.
3. Stir the water and slowly add a small quantity of the sulfuric acid. The solution becomes warm.
Stir the solution again and add the remaining sulfuric acid in small quantities. The solution
becomes hot.
4. Let the solution temperature decrease to approximately 25 °C.
5. Dilute to the mark with deionized water. Mix fully.
6. Add the solution to the analyzer bottle. Insert the seal assembly and put the cap on.
Prepare Standard 1
Use this procedure to make a 500 µg/L silica standard solution. Be sure to clean all labware before
use.
Note: To measure silica more than 500 ppb, it may be necessary to calibrate at a value closer to the expected
value. For example, if an expected value for the process is 2000 ppb, prepare a 2000 ppb standard and calibrate
the instrument with the 2000 ppb instead of a 500 ppb standard.
Items to collect:
• Silica standard solution, 1 g/L as SiO
• Volumetric flask, 2 L
• 1-mL pipet
• Deionized water, 2 L
• Analyzer Bottle #S1
1. Add approximately half of the deionized water to the volumetric flask.
2. Add 1 mL of the 1 g/L standard solution.
3. Dilute to the mark with deionized water. Mix fully.
4. Add the solution to the analyzer bottle. Insert the seal assembly and put the cap on.
Turn on the analyzer
1. Open the top door.
2. Pull the analytics panel open. A magnetic latch holds the panel closed.
3. Turn on the power switch on the main circuit board (refer to
4. Close the analytics panel.
Start the analyzer setup
When the analyzer is powered on for the first time, or powered on after the configuration settings
have been set to their default values:
1. Select the applicable LANGUAGE.
2. Select the DATE FORMAT.
3. Set the DATE and TIME.
8 English
SO , 95–97%, analytical quality, 90 mL
2 4
2
Figure 4 on page 6).