| Analysis | Container | Preservative | Holding Time (Days unless stated otherwise) |
|---|---|---|---|
| pH | any | NONE | 15 minutes |
| Ammonia, Nitrogen | 250 ml Plastic | 1 ml H2SO4ÿ/ liter | 28 |
| Acute Bioassays | cubitainers | NONE | 36 hours |
| Chronic Bioassays | cubitainers | NONE | 72 hours |
| 5-Day BOD + TSS | 1 liter Plastic | NONE | 48 hours |
| Chloride | 500 ml Plastic | NONE | 28 |
| Chloropyll A | 2 liter amber glass | NONE | 48 hours |
| COD | 250 ml Plastic | 1 ml H2SO4ÿ/ liter | 28 |
| Conductivity | 500 ml Plastic | NONE | 14 |
| Cyanide, Total | 250 ml Plastic | 1 pellet NaOH | 14 |
| Fecal Coliform | 250 ml Plastic | 4 ml 10% Na2SO3O3 | 6 hours |
| Fluoride | 500 ml Plastic | NONE | 28 |
| Hardness | 500 ml Plastic | 1 ml HNO3ÿ/ liter | 6 months |
| MBAS | 500 ml Plastic | NONE | 48 hours |
| Metals | 500 ml Plastic | 1 ml HNO3ÿ/ liter | 6 months |
| Nitrate/Nitrite | 250 ml Plastic | 0.5 ml H2SO4ÿ/ liter | 48 hours |
| Oil & Grease | 1 liter wide-mouth glass | 5 ml 1:1 HCI | 28 |
| Phenols | 1 liter glass | 1 ml H2SO4ÿ/ liter + 3 scoops Copper sulfate | 28 |
| Settleable Solids | 1 gallon Plastic | None | 48 hours |
| Sulfate | 500 ml Plastic | NONE | 28 |
| Sulfide | 1 liter Glass | 3 pellets NaOH + 1 ml 2N Zinc acetate | 7 |
| Total Dissolved Solids | 500 ml Plastic | NONE | 7 |
| Total Kjeldahl Nitrogen | 250 ml Plastic | 0.5 ml H2SO4 | 28 |
| Total Phosphorous | 500 ml Plastic | 1 ml HNO3 | 6 months |
| Total Solids | 250 ml Plastic | NONE | 7 |
| Total Suspended Solids w/o BOD | 500 ml Plastic | NONE | 7 |
| Turbidity | 500 ml Plastic | NONE | 48 hours |
| Volatile Solids | 500 ml Plastic | NONE | 7 |
