A Laboratory Sprayer-Flamer

A bench-mounted sprayer-flamer for research work is described. Constant rate spraying, logarithmic-dosage spraying, and flaming can be done at variable spray pressures and 10 speeds. The sprayer-flamer facilitates accurate and rapid application of material on plants and soil in pots and flats. The logarithmic-dosage sprayer gives a 16-fold variation in spray concentration over a 3-ft distance.