For metals, typical minimum sample requirements are 20 mL for waters. Larger volumes are recommended to allow for Quality Control samples and repeats.
Sample Collection – Ultra Trace Metals and Mercury
Sampling Element | Groundwater | Surface Water | Drinking Water |
Sample Container | 50 mL HDPE | 50 mL HDPE | 50 mL HDPE |
Field Filtered | Yes | No | No |
Preservative | HNO3 (to pH <2) | HNO3 (to pH <2) | HNO3 (to pH <2) |
Min. Sample Size | 20mL | 20 mL | 20 mL |
Recommended Sample Size | 50 mL | 50 mL | 50 mL |
Hold Time | days | 60 days | 60 days |
Sample Container | 50 mL HDPE | 50 mL HDPE | 50 mL HDPE |
Dissolved Metals (filtered) | Yes | No | No |
Preservative | HCl (to pH <2) | HCl (to pH <2) | HCl (to pH <2) |
Min. Sample Size | 50mL | 50 mL | 50 mL |
Recommended Sample Size | 100 ml | 100 ml | 100 ml |
Hold Time | 28 days | 28 days | 28 days |