GPD Global (Grand Junction, CO) has developed Positive Cavity Displacement (PCD) Dispensing for next-generation volumetric dispensing. Fluids are delivered to the substrate via nozzles, a technique that is not affected by variations in temperature or reservoir pressure, thereby improving day-to-day and start-to-finish process results, according to the company. Micro dispensing down to 1 nl is possible. In addition, progressive cavity dispense technology can meter high and low viscosity fluids with ±1 percent repeatability.
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