Hach DR/700 Procedures Manual page 55

result by the correction factor in column 5 of the table below. A reagent
blank also should be carried through the digestion and measurement
procedures.
Table 7. Vigorous Digestion
Expected Suggested
Metal Sample for Volume
Concentration Digestion
1 mg/L 50 mL
10 5
100 1
Suggested Suggested
Final Volume
1:1 HC1 After Digestion
10 mL 200 mL
10 200
25 500
1-37
Correction
Factor
4
40
500