DOW CHEMICAL <DOW> TO INCREASE PRICES Dow Chemical U.S.A. Midland Co said it will increase prices of its high performance thermal fluids, in bulk and drums, effective July One, for contract and spot customers. The bulk list prices for diphenyl oxide, in both technical and refined grades, will be raised five pct to 1.26 dlrs per pound for technical and 1.36 dlrs per for refined, Dow said. Other increases include Dowtherm G to 21.92 dlrs per gallon; Dowtherm HT to 20.94 dlrs per gallon; Dowtherm J to 14.96 dlrs per gallon, and Dowtherm LF to 18.68 dlrs per gallon.