Tree Tech microinjection units have set a new standard for economical and environmentally safe tree care. Product is administered directly into the tree's vascular system, using a single dose applicator which is manually pressurized. The applicator is made of two interlocking plastic sections welded to a funnel-shaped dispenser tube. These leakproof applicators are hermetically sealed to eliminate spray drift or any groundwater contamination, while reducing applicator exposure. All microinjection systems come with complete application and handling instructions. Excellent for urban areas where spraying is impractical.Nutri-Ject ® Increased level of high quality nutrients for even better performance. Patented fertilizer formulation provides N-P-K levels, as well as a special micro-nutrient package, copper, iron, manganese and zinc.