| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Mentha arvensis var. piperascens | Leaf | 500.0 | 600.0 | * | |
| Cannabis sativa | Plant | -- | -- | * | |
| Coriandrum sativum | Essential Oil | -- | -- | * | |
| Thuja occidentalis | Branches | -- | -- | * | |
| Valeriana officinalis | Root Essent. Oil | -- | -- | * | |
| Valeriana officinalis | Root | -- | -- | * |