Blue-White Industries’ Proseries-M® M-3 and M-4 NSF 61-listed peristaltic metering pumps are designed for use in mid-to-high volume municipal water and wastewater treatment applications. Proseries-M units are compatible with the most commonly used chemicals in these applications, such as sodium hypochlorite and hydrogen peroxide. These pumps have a no-maintenance, brushless, variable-speed motors and a 10,000:1 turn-down ratio, with high-resolution motor speed adjustment. Additional benefits include an operator-friendly, digital touch pad; high-contrast, backlit LCD; NEMA 4X/IP 66 wash-down rating; exclusive, built-in, patented Tube Failure Detection System and a heavy, single-piece rotor (no flexing and increased accuracy). Available feed rates range from 0.0002 to 158.5 gph (depending on model ordered), pressures to 125 psi.