1 AR-The standard Mallinckrodt grade of analytical reagents; suitable for laboratory and general use. 2  If the reagent also meets the requirements of the American Chemical Society Committee on Analytical Reagent, it will be denoted as an AR (ACS) reagent.
Clint Eastwood (May 31st, 1930), the American actor, director and producer has won 4 Oscars:-1992: Oscar to the Best Director and Oscar to the Best Picture for 'Unforgiven'.-1992: Oscar to the Best Director and Oscar to the Best Picture for 'Million Dollar Baby'.
Since its inception, the award has been given to 74 actresses. Katharine Hepburn has won the most awards in this category, with four Oscars. Meryl Streep, who has a total of 20 Oscar nominations (three wins), has been nominated in this category on 16 occasions, resulting in two awards.