Simple, virtually indestructible, and very accurate, these small to medium grower models are the best choice for home or market gardeners who do a lot of injecting or spraying (soluble fertilizers, foliar feeds, soil inoculants or pest controls).
Tank comes lined with a bladder-type bag which lasts several years. To operate, just fill the tank with concentrate, dial in the desired ratio (select from 1:30 to 1:200), turn on the water and that's it! Both models use hose threads and are easy to disconnect. Minimum flow rate is 2 GPM. Look through clear plastic outlet to see if concentrate is finished. Add food coloring if concentrate is clear.