• +/-0.5% flow accuracy per calibrated channel
• Multi-channel dispensing with microliter flow rates
• Dispenses 0.5ml in less than 2 seconds
• Non-drip function eliminates drips at dose end
• 4, 8, 12, 16, 20, 24, 28, 32 or 48 channel versions
• Flow rates up to 21 ml/min per channel
• Eight driven stainless steel rollers
• Two models for IP31 or IP66/NEMA 4X protection
• Dispensing by keypress or a remote footswitch/handswitch
• A Watson-Marlow Value for life pump with five year warranty.

The new 520Di/CA pump combines extraordinary levels of functionality with an on-screen menu, easy-to-use tactile membrane keypad and an alphanumeric display. Up to 50 individual dispensing programs including all dose parameters and calibration, can be stored in the memory with full file name. Additional features include soft-start "ramp", which reduces splashes and frothing, and a non-drip function that eliminates drips at the end of each dose. Brushless DC motor with 3,500:1 speed control. IP31 pump has RS232 and the IP66/NEMA 4X model has RS485 control via serial communications.

A simple security protection code protects set functions and a comprehensive security protection can be incorporated to protect dispensing parameters and calibration values.