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.

Volatile Organic Compounds 1
PEO-120-1 WPCHEM
Study Type

Analyte	Low Limit		High Limit	Units
Benzene 1, 2, 3 4375	8.00	to	120	µg/L
1,2-Dichlorobenzene 1, 2, 3 4610	8.00	to	100	µg/L
1,3-Dichlorobenzene 1, 2, 3 4615	9.00	to	125	µg/L
1,4-Dichlorobenzene 1, 2, 3 4620	8.00	to	115	µg/L
Ethylbenzene 1, 2, 3 4765	9.00	to	100	µg/L
Methyl tert-butyl ether (MTBE) 1, 3, 4 5000	15.0	to	100	µg/L
Naphthalene 1, 3 5005	8.00	to	190	µg/L
Toluene 1, 2, 3 5140	7.00	to	100	µg/L
1,2,4-Trimethylbenzene 3 5210	8.00	to	100	µg/L
1,3,5-Trimethylbenzene 3 5215	8.00	to	100	µg/L
m+p-Xylene 3 5240	8.00	to	300	µg/L
o-Xylene 3 5250	8.00	to	300	µg/L
Xylene, total 1, 3 5260	20.0	to	300	µg/L

Volatile Organic Compounds 2
PEO-120-2 WPCHEM
Study Type

Analyte	Low Limit		High Limit	Units
Bromodichloromethane 1, 2, 3 4395	8.00	to	115	µg/L
Bromoform 1, 2, 3 4400	11.0	to	100	µg/L
Carbon tetrachloride 1, 2, 3 4455	10.0	to	140	µg/L
Chlorobenzene 1, 2, 3 4475	10.0	to	120	µg/L
Chloroform 1, 2, 3 4505	12.0	to	95.0	µg/L
Dibromochloromethane 1, 2, 3 4575	11.0	to	140	µg/L
1,2-Dichloroethane 1, 2, 3 4635	10.0	to	150	µg/L
Methylene chloride (Dichloromethane) 1, 2, 3 4975	10.0	to	125	µg/L
Tetrachloroethylene (Perchloroethylene) 1, 2, 3 5115	10.0	to	150	µg/L
1,1,1-Trichloroethane 1, 2, 3 5160	10.0	to	90.0	µg/L
Trichloroethene (Trichloroethylene) 1, 2, 3 5170	10.0	to	95.0	µg/L

Volatile Organic Compounds 3A
PEO-120-3A WPCHEM
Study Type

Analyte	Low Limit		High Limit	Units
Chloroethane 1, 3 4485	20.0	to	100	µg/L
1,1-Dichloroethane 1, 3, 4 4630	15.0	to	150	µg/L
1,1-Dichloroethylene 1, 3 4640	11.0	to	120	µg/L
cis-1,2-Dichloroethylene 1, 3, 4 4645	15.0	to	150	µg/L
1,2-Dichloropropane 1, 3 4655	10.0	to	150	µg/L
cis-1,3-Dichloropropene 1, 3, 4 4680	15.0	to	100	µg/L
trans-1,3-Dichloropropene 1, 3 4685	8.00	to	90.0	µg/L
trans-1,2-Dichloroethylene 1, 3 4700	10.0	to	150	µg/L
2-Hexanone 1, 3, 4 4860	20.0	to	150	µg/L
Methyl bromide (Bromomethane) 1, 3 4950	20.0	to	100	µg/L
Methyl chloride (Chloromethane) 1, 3 4960	20.0	to	100	µg/L
4-Methyl-2-pentanone (MIBK) 1, 3 4995	20.0	to	200	µg/L
Styrene 1, 3 5100	20.0	to	100	µg/L
1,1,2,2-Tetrachloroethane 1, 3 5110	10.0	to	150	µg/L
1,1,2-Trichloroethane 1, 3 5165	25.0	to	150	µg/L
Trichlorofluoromethane 1, 3 5175	20.0	to	100	µg/L
Vinyl chloride 1, 3 5235	20.0	to	100	µg/L

Volatile Organic Compounds 3B
PEO-120-3B WPCHEM
Study Type

Analyte	Low Limit		High Limit	Units
Acetone 3 4315	10.0	to	150	µg/L
Acetonitrile 3 4320	10.0	to	150	µg/L
Acrolein (Propenal) 3 4325	10.0	to	150	µg/L
Acrylonitrile 3 4340	10.0	to	150	µg/L
2-Butanone (Methyl ethyl ketone, MEK) 3 4410	10.0	to	150	µg/L
Carbon disulfide 3 4450	10.0	to	150	µg/L
2-Chloroethyl vinyl ether 3 4500	10.0	to	150	µg/L
1,2-Dibromo-3-chloropropane (DBCP) 3 4570	10.0	to	150	µg/L
1,2-Dibromoethane (EDB, Ethylene dibromide) 3 4585	10.0	to	150	µg/L
Dibromomethane 3 4595	10.0	to	150	µg/L
Dichlorodifluoromethane 3 4625	10.0	to	150	µg/L
Dichlorofluoromethane 3 4626	10.0	to	150	µg/L
1,1,1,2-Tetrachloroethane 3 5105	10.0	to	150	µg/L
1,2,3-Trichloropropane 3 5180	10.0	to	150	µg/L
Vinyl acetate 3 5225	10.0	to	150	µg/L

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Accreditied for study program by the following as indicated

1. NELAC
2. Other
3. A2LA
4. NELAC Experimental