Profile: Weed Systems, Inc offers custom-built research spray equipment to agricultural researchers. We provide CO2 powered back pack sprayers as well as all the component parts - custom aluminum spray booms, hard to find fittings, specialty nozzles, CO2 cylinders, spray headers and stainless steel tanks. The basic HQ300 sprayer includes a heavy duty platform carrier with 5lb CO2 cylinder, regulator with hose and 3-gallon stainless steel tank with beverage-type couplers. The basic Koke Kap Sprayer includes a CO2 power pack with one 2.5lb CO2 cylinder, regulator with hose, on a scuba type carrier.