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'.
Several actors have won 2 oscars in their careers, but only WALTER BRENNAN and JACK NICHOLSON have achieved a record 3 Oscars for Best Acting in Leading and/or Supporting roles. LAURENCE OLIVIER was nominated 11 times (10 for acting roles) during his career - a record only surpassed recently by JACK NICHOLSON with his 12th acting nomination in 2002.