Berkefeld TWA 6, Operating Instructions Manual, Page: 37 / 61

Conversion factors for analysis results
Formerly usual details Old unit of New unit of New designation
measurement measurement
Colour (platinum) 1 mg/l 0,025 m
-1
colouring, abs. coeff. HG 436 nm
40 mg/l 1 m
-1
UV extinction 1 cm
-1
100 m
-1
UV abs. coeff. HG 254 nm
0,01 cm
-1
1 m
-1
Electr. conductivity 1 µs/cm 0,1 mS/m
10 µs/cm 1 mS/m
Potassium permanganate consump. (KMnO
4
) 1 mg/l 0,25 g/m
3
oxidizability, Mn VII
Ü
II as O
2
4 mg/l 1 g/m
3
Potassium dichromate consump.(K
2
CR
2
O
7
) 1 mg/l 0,16 g/m
3
oxidizability, CR VI
Ü
III as O
2
6,25 mg/l 1 g/m
3
Oxygen (O
2
) 1 mg/l 1 g/m
3
m-value 1 mval/l 1 mol/m
3
acid capacity up to 4,3
p-value 1 mval/l 1 mol/m
3
acid capacity up to 8,2
free carbon dioxide (CO
2
) 1 mg/l 0,0227 mol/m
3
base capacity up to 8,2
44 mg/l 1 mol/m
3
Calcium Ca
++
) 1 mg/l 0,025 mol/m
3
40 mg/l 1 mol/m
3
Magnesium (Mg
++
) 1 mg/l 0,0412 mol/m
3
24,3 mg/l 1 mol/m
3
Total hardness 1
0
dH 0,1786 mol/m
3
sum of alkaline earths
5,6
0
dH 1 mol/m
3
Carbonate hardness 1
0
dH 0,357 mol/m
3
acid capacity up to 4,3
2,8
0
dH 1 mol/m
3
Iron (Fe) 1 mg/l 17,9 mmol/m
3
0,056 mg/l 1 mmol/m
3
Manganese (Mn) 1 mg/l 18,2 mmol/m
3
0,055 mg/l 1 mmol/m
3
Sodium (Na
+
) 1 mg/l 0,0434 mol/m
3
23 mg/l 1 mol/m
3
Potassium (K
+
) 1 mg/l 0,0256 mol/m
3
39 mg/l 1 mol/m
3
Aluminium (Al
+++
) 1 mg/l 37 mmol/m
3
0,027 mg/l 1 mmol/m
3
Copper (Cu) 1 mg/l 15,75 mmol/m
3
0,0635 mg/l 1 mmol/m
3
Zinc (Zn) 1 mg/l 15,29 mmol/m
3
0,0654 mg/l 1 mmol/m
3
Ammonium (NH
4
+
) 1 mg/l 55,5 mmol/m
3
0,018 mg/l 1 mmol/m
3
Nitrite (NO
2
-
) 1 mg/l 21,7 mmol/m
3
0,046 mg/l 1 mmol/m
3
Nitrate NO
3
-
) 1 mg/l 0,0161 mol/m
3
62 mg/l 1 mol/m
3
Chloride (Cl
-
) 1 mg/l 0,0282 mol/m
3
35,5 mg/l 1 mol/m
3
Sulphate (SO
4
-
) 1 mg/l 0,0104 mol/m
3
96 mg/l 1 mol/m
3
Phosphate (P
2
O
5
) 1 mg/l 7 mmol/m
3
phosphate as P
0,142 mg/l 1 mmol/m
3
(PO
4
-
) 1 mg/l 10,5 mmol/m
3
0,095 mg/l 1 mmol/m
3
Silicate (SiO
2
) 1 mg/l 16,6 mmol/m
3
Silicate as Si
0,06 mg/l 1 mmol/m
3
Chlorine, free (Cl
2
) 1 mg/l 1 g/m
3
Chlorine, oxidizing, free as Cl
2
Chlorine, in total (Cl
2
) 1 mg/l 1 g/m
3
Chlorine, oxidizing, in total as Cl
2