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Chemjet Injector, Queensland Plastics

Quick overview Chemjet Tree Injectors are inexpensive reloadable syringes used to inject pesticides, fungicides and fertilizers to treat diseases and pests, to prevent death of the tree. Tree injectors are used in a process called micro-injection to treat an entire tree (leaves to roots) by deploying multiple Chemjet Injectors evenly spaced around the trunk of the tree.

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.

The aim of chemical injection is to utilize the trees natural transport system to distribute pesticides, fungicides and fertilizers to the areas where they are most effective, without releasing any of these chemicals into the environment. ​​​​​​​​​​​​​​​The tree takes up carbon dioxide and energy from the sun through the leaves where it photosynthesis’ it’s food. The food (sugars and carbohydrates) dissolves in the sap and are carried downwards through the inner bark. This food is then distributed to every living cell in the tree including the root system. ​


Tapping into the trees natural circulatory process allows chemicals to dissipate rapidly and effectively, minimizing wastage yet maximizing efficiency by distributing to vitally important elements of the tree’s infrastructure. The chemical reaches every element of the tree including the fine root hairs.​


Applying chemicals to the plant tissue by spraying is inefficient especially in the fight against root pathogens, and a tiny fraction of conventionally used chemical is injected directly into the tree, without any release of chemicals in the environment.


Other tree injection systems use high pressures, which can lead to cell damage around the injection site, impair sap flow and uplift the bark. Also the higher pressures places the product into areas where the product is ineffective and wasted. The Chemjet Injection system is a safe low-pressure she Chemjet Injector is a spring-loaded device, with a 20mm tapered `nozzle’ to assist placing the injector into the tree. Like a syringe the chemical is `drawn’ into the `chamber’ of the injector in measured quantities up to 20ml. The injector is then `locked off’ by turning the handle in a clockwise direction. The injectors are placed in the tree by drilling an 11/64″ or 4mm (wood dependent) hole 1 1/4″ or 50mm deep, utilizing the tapered nozzle to secure the injector firmly in place. Turning the handle anti clockwise will then release the plunger and inject the tree with the desired amount of chemical.

Economical and Simple


The process of tree injection has traditionally been conducted by tree care professionals, and workers using injection devices that are very expensive and specialized. The specialization of tree injection using the traditional equipment and methods has cause tree injection to be costly and as a result infrequently applied.


But with use of the reloadable Chemjet Tree injector, tree injection treatment is very economical. The low cost of the Chemjet Tree Injector allows a tree care worker to save time and use multiple Chemjet Injectors simultaneously on multiple trees, or at multiple locations on one tree.   For example, an injection treatment on a large tree could employ 25 injectors all at once, and be finished in minutes.


In addition. The cost efficient Chemjet Tree Injector allows the option of injection for tree care by resourceful property owners, farmers and resort groundskeepers (with proper knowledge and training).  The Chemjet Tree Injector is inexpensive, rugged, refillable and reusable. And with proper care and maintenance could be used repeatedly for many years.

Product description

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.

Product variants
Chemjet Injectors, Queensland Plastics
Chemjet Injector
Chemjet Tree Injectors are inexpensive reloadable syringes used to inject pesticides, fungicides and fertilizers to treat diseases and pests, to prevent death of the tree. Tree injectors are used in a process called micro-injection to treat an entire tree (leaves to roots) by deploying multiple Chemjet Injectors evenly spaced around the trunk of the tree.
PRICE BREAKS - The more you buy, the more you save
Quantity 15+ 30+ 70+ 100+ 125+
Price $12.25 $11.75 $11.00 $10.50 $10.00
Delivery date: 3-5 days
$12.50
Additional information
Manufacturer: Chemjet
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