REID-ASHMAN <REAS> TO DIVEST TEST PRODUCT UNIT Reid-Ashman Inc said it has decided to divest its test products division, located in Santa Clara. The company said it will entertain offers through March 30. It also said Steven Reid, a company founder and president of the test division, has made an offer to purchase the unit. The company's test division accounted for about ten pct of total revenues in the year ended Sept 30, 1986 and is currently running a revenue rate of under two mln dlrs per year, it said.