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Standard preparation
Prepare stock solution
Use this procedure to make a 1 g/L phosphate stock solution. Use the
stock solution to make the standard solution. If the stock solution is kept
at 5 °C (41 °F), the shelf life is approximately one year. Be sure to clean
all labware before use. Items to collect:
• Sodium phosphate monobasic, NaH
1.26 g
• Laboratory scale
• Laboratory oven
• Desiccator
• Volumetric flask, 1 L
• Deionized water, 2 L
1. Put approximately 1.5 g of the sodium phosphate monobasic in a
100 °C oven for 24 hours.
2. Put the sodium phosphate monobasic in a desiccator for one hour.
3. Add approximately half of the deionized water to the volumetric flask.
4. Weigh 1.26 g of the dried sodium phosphate monobasic. Stir the
water and add the sodium phosphate monobasic to the volumetric
flask.
5. Stir the solution until the reagent fully dissolves.
6. Dilute to the mark with deionized water. Mix fully.
Prepare Standard 1
Use deionized water that has a resistivity of 18.2 MΩ-cm for the zero-
standard solution. Add the solution to Analyzer Bottle #S1.
Prepare Standard 2
Use this procedure to make a 3 mg/L phosphate standard solution. Be
sure to clean all labware before use.
PO
, 99%, analytical grade,
2
4
Items to collect:
• Phosphate stock solution, 1 g/L as PO
• Volumetric flask, 2 L
• Pipet, 6 mL
• Deionized water, 2 L
• Analyzer Bottle #S2
1. Add approximately half of the deionized water to the volumetric flask.
Add 6 mL of the 1 g/L standard solution.
2. Dilute to the mark with deionized water. Mix fully.
3. 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 open the analytics panel. A magnetic latch holds the panel
closed.
3. Turn on the power switch on the main circuit board (refer to
on page 4).
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.
4. When prompted, confirm with YES to setup the analyzer.
Note: The analyzer stays in initialization mode until the configuration is
complete.
5. Select the channel.
6. Select the measurement mode.
4
Figure 1
English 9
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