Photometric Determination Of Potassium - MACHEREY-NAGEL VISOCOLOR Manual

Manual VISOCOLOR
Procedure with further NANOCOLOR
Messung des Phosphors
®
NANOCOLOR Phosphate 15 (985080):
Follow the instructions enclosed in the reagent set.
Preprogrammed NANOCOLOR
® UV UV
NANOCOLOR / , /
VIS VIS
Plus
PF-12 , PF-12
Wavelength 690 nm
Method 0807 1.4–69 mg P
Multiply displayed result with 4.3:
6–300 mg P/kg soil)
Method 0808 60–1560 kg P
Other photometers
Wavelength 690 nm
Multiply displayed result in mg/L with 46:
14–690 mg P
Multiply displayed result in mg/L with 20:
6–300 mg P/kg soil

3.8 Photometric determination of potassium

Procedure with PF-3:
Measurement of potassium with reagent set VISOCOLOR
Potassium and the PF-3:
Zero measurement with sample. Rinse test tube (51) and add
10 mL water sample using the plastic syringe (13). Add 15 drops
K-1 (47) seal the glass and shake. Add 1 level measuring spoon
of K-2 (48) seal the glass and shake the mixture until the powder
has dissolved. Seal the glass and shake constantly for 30 s until
the powder has dissolved. Clean outside of test tube and mea-
sure with the PF-3 (40).
1
2
3
4
5
ml
K-1
51 13 47
Preprogrammed submethods:
Wavelength: 660 nm
Method 5321 2–15 mg/L K soil
Method 5326 40–300 mg K/kg soil
Method 5327 5–36 mg/100 g K
Measurement of potassium with reagent set NANOCOLOR
Potassium 50 (REF 985045):
Follow the instructions enclosed in the reagent set.
Preprogrammed submethods
Wavelength: 660 nm
Method 0451 2–50 mg/L K
Method 0456 40–1000 mg K/kg soil
Method 0457 5–120 mg/100 g K
30
®
reagent case for soil analysis
®
photometers
mit dem Reagenziensatz
®
photometers
II, VIS, VIS II, 500 D, 400 D,
O /100 g soil
2 5
O /ha soil
2 5
O /kg soil
2 5
K-2
48 40
O
2
O
2
Preprogrammed NANOCOLOR
® UV
NANOCOLOR
Plus
PF-12 , PF-12
Wavelength
Method (0)452
Multiply displayed result with 8.3:
Other photometers
Wavelength
Multiply displayed result in mg/L with 24:
Multiply displayed result in mg/L with 20:
®
ECO
®
Manual VISOCOLOR
®
photometers
UV
/ , / II, VIS, VIS II, 500 D, 400 D,
VIS VIS
690 nm
5–120 mg K O/100 g soil
2
40–1000 mg K/kg soil
690 nm
50–1200 mg K O/kg soil
2
40–1000 mg K/kg soil
®
reagent case for soil analysis 02.19