API 675 is the specification for controlled volume, positive displacement pumps for use in service in the petroleum, chemical, and gas industries but is increasingly being adopted as the general industry specification for metering and dosing pumps.

A more accurate knowledge of pump performance can often be a critical element in process optimization and the reduction of operating costs.

Although all Hydra-Cell metering pumps are claimed to meet these performance standards, in terms of repeatability, linearity and steady state accuracy, Wanner International has invested in a dedicated test facility that enables customers to verify performance of individual pumps. Independent witnessed and non-witnessed testing is available, followed by performance certification.