For pumping small volumes of chemicals, what is the most accurate pump?

The diaphragm pump is recognized for its ability to accurately deliver small volumes of chemicals due to its design and operational characteristics. This type of pump uses a flexible diaphragm to create pressure changes within a chamber, allowing it to precisely meter the flow of liquids. The diaphragm movement is directly controlled, which provides a high level of accuracy in the transferred volume, making it suitable for applications that require precise chemical dosing.

Diaphragm pumps are particularly favored in wastewater treatment and chemical handling because they can also handle corrosive and viscous liquids without the risk of contamination. This capability, combined with the inherent precision of their operation, makes diaphragm pumps the ideal choice when accuracy is paramount for small volume transfers.

In contrast, centrifugal pumps function better at moving larger volumes of liquid rather than providing precise control for small quantities. Rotary pumps, while capable of handling a wider variety of fluids, may not offer the same level of accuracy as diaphragm pumps for minute volumes. Submersible pumps, typically used for pumping fluids from underground sources, are configured for larger, bulk movements and lack the precision required for accurate chemical dosing. Thus, the diaphragm pump stands out as the most accurate option for pumping small volumes of chemicals.