| EPA Method | Test Name | Matrix | MRL | Instrument |
|---|
| EPA 200.7 | Hafnium, Dissolved, by Inductively Couples Plasma - Atomic Emission Spectrometr | Liquid | 0.1 | ICP-AES |
| EPA 200.7 | Hafnium, Dissolved, by Inductively Couples Plasma - Atomic Emission Spectrometr | Liquid | 100 | ICP-AES |
| EPA 200.7 | Hafnium, Total, by Inductively Couples Plasma - Atomic Emission Spectrometry | Liquid | 0.1 | ICP-AES |
| EPA 200.7 | Hafnium, Total, by Inductively Couples Plasma - Atomic Emission Spectrometry | Liquid | 100 | ICP-AES |