Proficiency Testing Ranges
Listed below are the analytes contained within each sample for proficiency
testing. The method detection limits to be used for determining the levels of
these analytes should fall between the low and high limits listed below.
Anions in Soil
SPE-013
RCRA
Study Type
Bromide
1, 2
1540
|
10.0
|
to
|
200
|
mg/Kg
|
Chloride
1, 2
1575
|
25.0
|
to
|
2000
|
mg/Kg
|
Fluoride
1, 2
1730
|
25.0
|
to
|
500
|
mg/Kg
|
Nitrate as N
1, 2
1810
|
25.0
|
to
|
500
|
mg/Kg
|
Nitrate+nitrite as N
1820
|
0.00
|
to
|
2000
|
mg/Kg
|
Nitrite as N
1
1840
|
0.00
|
to
|
500
|
mg/Kg
|
Orthophosphate as P
1, 2
1870
|
25.0
|
to
|
500
|
mg/Kg
|
Sulfate
1, 2
2000
|
25.0
|
to
|
2000
|
mg/Kg
|