PHARMACONTROL <PHAR.O> ACQUIRES REVCO UNIT PharmaControl Corp said it acquired Private Formulations Inc from <Revco D.S. Inc> for six mln dlrs in cash, a 13,550,000 dlr promissory note and warrants to buy 200,000 PharmaControl common shares. PharmaControl said the purchase price was financed, along with one mln dlrs in working capital, through secured institutional financing. The company said betweenm 11,550,000 dlrs and 12,550,000 dlrs f the principal amount of the Revco note, plus accrued interest, is payable June 30. The balance is payable over three years. PharmaControl said it expects to make the payment due to Revco from proceeds of a proposed offering of units consisting of convertible subordinated debenturers and common stock currently on file with the Securities and Exchange Commission. Upon closing of the public offering, the company said, it expects the secured institutional financing to increase to a total of 12 mln dlrs. Private Formulations is primarily engaged in the manufacture and distribution of vitamins and private label over-the-counter pharmaceutical products.