| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Psidium guajava | Fruit | -- | -- | * | |
| Pimenta dioica | Plant | -- | -- | * | |
| Morus alba | Leaf | -- | -- | * | |
| Melaleuca leucadendra | Essential Oil | -- | -- | Guenther, E., The Essential Oils, 6 volumes, D. van Nostrand, New York, 1948-1952. | |
| Malus domestica | Fruit | -- | -- | * | |
| Lavandula x intermedia | Plant | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Lavandula angustifolia | Flower | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Eucalyptus globulus | Leaf | -- | -- | * | |
| Achillea moschata | Plant | -- | -- | * |