Wheaton Bottle Top Dispenser - Calibrex Digital 521

• Superior Chemical Resistance
• Long-Lasting Performance Stability
• Comfortable and Convenient in Use
• Solid, yet Simple Construction
• Instant Volume Setting
• In-Lab Calibration
• Autoclavable at 121°C/250°F While Fully Assembled

Three 521 sizes expand the Calibrex line with larger dispensing volumes reanging from 2 to 20 mL, 10 to 50 mL and 10 to 100 mL.  Similar to the 520 model in many respects, such as construction qualiy, sturdiness, chemical resistance, smooth plunger travel, in-lab calibration, autoclaving, the 521 model has a distinct black desing.  Also fitted with the Solid Calibration adustment system, the 521 has an additional fine-tuning ring.  Each dispenser has a 32 mm screw thred and included with each unit are three adapters (38, 40 and 45 mm) and a 300 mm feed tube.

A True Digital System Cylindrical cam with pre-calibrated steps - one for each volume - contributes to the long-term calibration stability.   In-Lab Calibration Calibrex dispensers are factory calibrated.  Re-calibrating easily performed by means of a dedicated adjustment screw.