Chemjet Injector, Queensland Plastics

Chemjet Tree Injectors are spring-loaded syringe-like devices, with a 20mm tapered nozzle. The chemical is drawn through the nozzle into the chamber of the injector in measured 10, 15 or 20ml quantities. The injector handle is pulled back to energize the spring pressure can be locked open at 20 ml by twisting the handle in a clockwise direction.

Holes are drilled into the tree using a 11/64 bit to a depth of about one inch, and the Chemjet® nozzle is pressed into the hole by hand (no hammering) to make a tight seal.  Note: you do not have to twist while inserting!   While holding the Chemjet in place, the red handle is pulled back slightly then turned counterclockwise to allow the spring pressure to inject chemical into the tree. The injector is then left unattended to inject at a steady low pressure of about 20 PSI which does not damage the inner bark layers, and allows discharge of chemical into the xylem at a rate that is accommodated by the natural capacity of the tree to accept more liquid.

The circulatory system of a tree moves water/sap up from the roots to the branches and then back down again along the inner bark. The tree takes up carbon dioxide and energy from the sun through the leaves/needles where photosynthesis makes food (carbohydrates). The food then dissolves in the sap and is carried downwards through the inner bark. This food is distributed to every living cell of the tree including the root system.

Tapping into the natural circulatory process of a tree allows chemicals to be transported and rapidly dissipated throughout the entire tree, from the roots to the leaves, effectively minimizing waste and maximizing efficient use of treatment chemical

Injecting chemicals into trees using the Chemjet rather than spraying or soil drenching, is a more environmentally sound method of providing beneficial nutrients and treatment chemicals to trees.