Back Pressure Regulators

Changes in pressure can greatly vary the characteristics of SFC. Achieving extraction and chromatograms with high reproducibility on a supercritical fluid system requires a device that can perform pressure control in a stable manner. JASCO offers the BP-2080, which is capable of automatic pressure control, and the BP-2080-M, which is capable of manual pressure control.

BP-2080/2080-M Back Pressure Regulator
The BP-2080 and BP-2080-M employ a patented flow-switching valve (FSV) mechanism that enables stable system pressure control even at the lowest volume limit possible. The FSV mechanism regulates pressure by controlling the channel opening while a needle vibrates at a high rate of speed. This prevents blockages due to high-viscosity elution samples and solidified samples, which can be a problem with static pressure regulators. This enables stable system pressure, even during long-term continuous operation. Since the BP-2080 has a time program feature that can control pressure and temperature according to the passage of time, it makes it easy to automate analysis work. The BP-2080M offers manual control for the volume passing through the opening in the FSV mechanism.

SFC Vch-Bp 6-Way Valve Changer- Fraction Collector
The SFC-Vch-Bp is an option for the BP- 2080 that can be attached to the pressure control section of the BP-2080/BP-2080-M. It features a one-channel switching valve and one high-pressure 1-in-6-out valve. This option automatically separates the fluid eluted from the BP-2080 into test tubes or sample bins. The channel switching valve is used for selecting either collection or discharge, while the high-pressure 1-in-6- out valve connects downstream from the channel switching valve to function as 6-way branching valve.

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