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1—33
Digestion for Total Phosphorus,
continued
4.
Place the flask on a
hot plate. Boil gently for
30 minutes.
Note:
Sample should be
concentrated to less than
20 mL for best recovery.
After concentration,
maintain the volume near
20 mL by adding small
amounts of deionized water.
Do not exceed 20 mL.
5.
Cool the sample to room
temperature.
6.
Add 2.0 mL of 5.0 N
Sodium Hydroxide Solution.
Swirl to mix.
Note:
Use the 1-mL
calibrated dropper provided.
Содержание POCKET COLORIMETER II
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Страница 13: ...1 13 Instrument Cap Cord continued Figure 1 Attaching the Instrument Cap Cord...
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Страница 55: ...2 1 Section 2 Instrument Manual...
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Страница 61: ...2 7 Instrument Operation continued Figure 1 Battery Installation...
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