1-10mL Volume Range, 0.2mL Increment +/- 0.6 percent Accuracy. The Alpha series bottle top dispenser is designed with a smooth plunger movement for effortless and precise dispensing of liquids. Each unit has a Spring less PTFE valve manifold for exceptional functionality and chemical compatibility. Easy to use with simple, quickset volume adjustment knob. A swivel adapter allows 360 degree nozzle rotation. Dispensers are made for standard 30mm threads and include five adapters (28mm, 32mm, 36mm, 40mm and 45mm) that fit most reagent bottles. Adjustable nozzle with a cap prevents dripping. Easy to disassemble for cleaning and servicing. Individually calibrated in accordance with ISO 8655 standards and includes a calibration certificate. Dispenser can be calibrated by user in lab. Excellent chemical compatibility and fully autoclavable. Product Specifications:• Piston – Teflon/PTFE• Barrel – Glass with PP Sleeve• Housing – Polypropylene/Teflon• Volume Adjustment – Quick Set• Valve Assembly – Glass Ball & Seat• Discharge Assembly – Teflon• Delivery Tube – Teflon• Wetted Parts – FEP, PTFE, Glass1-10mL Volume Range, 0.2mL Increment +/- 0.6 percent Accuracy. The Alpha series bottle top dispenser is designed with a smooth plunger movement for effortless and precise dispensing of liquids. Each unit has a Spring less PTFE valve manifold for exceptional functionality and chemical compatibility. Easy to use with simple, quickset volume adjustment knob. A swivel adapter allows 360 degree nozzle rotation. Dispensers are made for standard 30mm threads and include five adapters (28mm, 32mm, 36mm, 40mm and 45mm) that fit most reagent bottles. Adjustable nozzle with a cap prevents dripping. Easy to disassemble for cleaning and servicing. Individually calibrated in accordance with ISO 8655 standards and includes a calibration certificate. Dispenser can be calibrated by user in lab. Excellent chemical compatibility and fully autoclavable.