Hach Digesdahl 23130-20 Instrument Manual page 86

DIGESTION PROCEDURE FOR SOLIDS,
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Phosphorus, Ascorbic Acid (Method 8048)
Expected PO
4
conc. (mg/kg)
10-450
25-1100
67-3100
500-23000
2000-93000
×
A 2500
mg/kg Total PO
----------------------- - =
×
B C
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
Potassium (Method 8049)
Expected K
conc. (mg/kg)
300-1700
800-4200
2000-11000
15000-85000
62000-300000
×
A 2500
----------------------- - = mg/kg Total K
×
B C
A = mg/L reading from instrument
B = g sample amount from table
C = mL analysis volume from table
continued
Sample
amount (g)
0.500
0.400
0.300
0.200
0.100
4
Sample
amount (g)
0.500
0.400
0.300
0.200
0.100
77
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Analysis
Volume (mL)
20.0
10.0
5.00
1.00
0.50
Analysis
Volume (mL)
20.0
10.0
5.00
1.00
0.50
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