| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Malus domestica | Fruit | 80.0 | 497.0 | -1.1 | USDA's Ag Handbook 8 and sequelae) |
| Ocimum basilicum | Leaf | -- | 5610.0 | -1.2 | USDA's Ag Handbook 8 and sequelae) |
| Arctium lappa | Root | 250.0 | 1250.0 | -1.2 | USDA's Ag Handbook 8 and sequelae) |
| Avena sativa | Seed | -- | 4000.0 | -1.3 | Jim Duke's personal files.* |
| Vigna radiata | Sprout Seedling | 330.0 | 3466.0 | -1.3 | USDA's Ag Handbook 8 and sequelae) |
| Castanea dentata | Seed | 2077.0 | 3697.0 | -1.3 | * |
| Macadamia spp | Seed | 3510.0 | 3610.0 | -1.3 | USDA's Ag Handbook 8 and sequelae) |
| Panax quinquefolius | Plant | 289.0 | 1240.0 | -1.3 | * |
| Castanea mollisima | Seed | 1820.0 | 3255.0 | -1.4 | * |
| Cocos nucifera | Seed | 1720.0 | 3245.0 | -1.4 | USDA's Ag Handbook 8 and sequelae) |
| Rosmarinus officinalis | Leaf | 1290.0 | 4000.0 | -1.5 | USDA's Ag Handbook 8 and sequelae) |
| Castanea sativa | Seed | 972.0 | 2139.0 | -1.6 | * |
| Harpagophytum procumbens | Root | -- | 450.0 | -1.6 | * |
| Momordica charantia | Seed | -- | 39.9 | -2.0 | Jim Duke's personal files. |
| Linum usitatissimum | Seed | -- | 0.248 | -2.0 | * |
| Artemisia dracunculus | Leaf | -- | -- | * | |
| Allium ampeloprasum | Plant | -- | -- | * | |
| Ribes nigrum | Fruit Juice | -- | 60.0 | * | |
| Valeriana officinalis | Rhizome | -- | -- | * | |
| Santalum album | Fruit | -- | -- | * |