I've discovered a pneumatic sprayer is still better for some applications but this a great universal use sprayer for plant food and some chemicals.  Even can be used for soap and antiseptic application.  My garden is in a different spot now and I get less use out of it.  But it always works, unlike the dispenser Scotts sells with their WS plant food.  I usually mix solid substances with a bit of water and adjust the mix accordingly. Handy for applying Epsom salt, as well.