Parker RB-1 Excess Powder Blower Parker research corporation| 12896 Parker RB-1 Excess Powder Blower Print Parker research corporation| 12896 Parker RB-1 Excess Powder Blower Used to remove excess magnetic powder on parts. RB-1: Excess powder blower. PB-1: Powder applicator for horizontal, vertical and overhead use. Capacity 455g (1lb). RB-4: Powder applicator, green rubber. Request for information