This pipette is built to last. Making no compromise on quality in product development, raw materials used and manufacturing processes Capp developed the greenest pipette available on the market. The Ecopipette is not only packaged using recyclable, biodegradable materials, but constructed from some of the most renewable durable resources available to ensure an advanced life span and greenest after service recycling. Capp Ecotrade Program and Alkali Scientific's Oath: Return any brand of old pipettes in exchange for discounted new Ecopipettes. Alkali and Capp will ensure an environmentally safe waste discharge of all old pipettes. Ask your favorite Alkali sales rep for more information about the Ecotrade program. Unique advantages of the Ecopipette: Lockable volume controller requiring 50 percent fewer turns. Display is fully visible during hand operations. Reduced force requirement for aspiration and blow-out The only pipette with fixed and variable exchangeable counter mechanism. Large pad for ease of tip ejection. Fully autoclavable pipette body (No disassembly required). Double O-ring for optimal tip seal. Compatible with all major pipette tip brands. Robust design includes metal tip base. Lowest incidence of breakage resulting from accidental dropping or tips mounting. 20-200 Microliter variable volume. 1.20 / 0.60 percent accuracy. Imprecision 0.30 / 0.15 percent.