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Conversions
Conversion factors for many of the commonly used units of measure
have been included to make the use of this manual more universal and to
simplify calculations. Conversions are categorized by test.
Nitrogen
Nitrite (NO
) = Nitrogen (N) x 3.28
2
Nitrate (N0
) = Nitrogen (N) x 4.42
3
Ammonia (NH
) = Nitrogen (N) x 1.22
3
Ammonium (NH
) = Nitrogen (N) x 1.29
4
Phosphate
Phosphorus (P) = Phosphate (PO
Phosphorus Pentoxide (P
Table 1. Hardness Conversion
Units of
mg/l
Measure
CaCO
mg/L CaCO
1.0
3
English gr/gal
CaCO
14.3
3
US gr/gal
CaCO
17.1
3
Fr. p/100,000
CaCO
10.0
3
Ger. p/100,000
CaO
17.9
meq/L
50.0
g/l CaO
1,790.0
lb./cu ft CaCO
16,100.0
3
*or 'epm/L,' or 'mval/L'
N.B. 1 meq/L = N/1000
) x 0.326
4
O
) = Phosphate (PO
2
5
British
American
gr/gal
gr/gal
(Imperial) (US)
CaCO
CaCO
3
3
3
0.07
0.058
1.0
0.83
1.2
1.0
0.7
0.58
1.25
1.04
3.5
2.9
125.0
104.2
1,123.0
935.0
) x 0.75
4
French
German
parts/
parts/
100,000
100,000
CaCO
CaO
meq/L* g/L CaO
3
0.1
0.056
0.02
1.43
0.8
0.286
1.72
0.96
0.343 9.66
1.0
0.56
0.2
1.79
1.0
0.358
5.0
2.8
1.0
179.0
100.0
35.8
1,610.0
900.0
321.0
1-2
lb./cu ft
CaCO
3
-4
-5
5.6
10
6.23
10
X
X
-3
-4
8.0
10
8.91
10
X
X
-3
-3
10
1.07
10
X
X
-3
-4
5.6
10
6.23
10
X
X
-2
-3
1.0
10
1.12
10
X
X
-2
-3
2.8
10
3.11
10
X
X
1.0
0.112
9.0
1.0
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