Upchurch Scientific® Back Pressure Regulators (BPRs) are designed to enhance system performance through outgassing prevention and improved pump check valve efficiency.

Choose from a line of Biocompatible (PEEK™ body) and Stainless Steel BPR Assemblies, each complete with a replaceable, factory preset cartridge (except 5psi version). Upchurch Scientific® Biocompatible and Stainless Steel BPR Assemblies create incremental back pressures ranging from 5 to 1,000psi (0.3 to 69 bar).

Replacement BPR cartridges will operate in any of the standard BPR holders. The recommended operating flow rate is 0.1 to 10 mL/min. Within this range, the amount of back pressure created by the BPR Cartridge and Assemblies will not vary more than ±10%. Lower or higher flow rates may result in larger pressure fluctuations.

The following materials are used in these products; BPR cartridges are PEEK™, ETFE, PCTFE, Perfluoroelastomer, and Gold-Plated Stainless Steel. Biocompatible BPR Assemblies include these same materials (53521-124 also includes unplated stainless steel). Stainless Steel Assemblies include all of the BPR cartridge materials plus Delrin®.