Specifications: Flow Rate — Range to 250 microliters per stroke. Maximum pressure to 2.6 psi (6'). Self-Priming— To 3 feet Fluid Viscosity— To 300 centistokes Fluid Temperature— To 200°F (93°C) Duty Cycle— 1 cycle/sec. max. (1⁄2 sec. on - 1⁄2 sec. off) Accuracy— ±2% stroke-to-stroke (for a stationary setup) I.D. Tubing Size — 3⁄16" Weight — .265 lb. Note: Positive suction head above 6" requires tight valves; consult factory for availability.