Back Pressure Regulators (BPRs)

Back Pressure Regulators

Choose from Biocompatible and Stainless Steel BPR Assemblies, each complete with a replaceable, factory preset cartridge (except the 5 and 20 PSI versions).

Upchurch Scientific BPR Assemblies create incremental back pressures ranging from 5 – 1,000 PSI (0.3 – 69 bar). The Biocompatible BPR Assemblies feature a PEEK holder; polymer-based fittings; biocompatible BPR cartridges and wrenches for tightening. Stainless Steel BPR assemblies feature the same biocompatible BPR cartridges with a 316 stainless steel holder and polymer fittings.

The recommended operating flow rate range for our BPR Cartridges is
0.1 – 10 mL/min. Within this range, the amount of back pressure created by the BPR Cartridges and Assemblies will not vary more than ±10%. Lower or higher flow rates may result in larger pressure fluctuations. Materials of construction include: PEEK, ETFE, perfluoroelastomer, and gold-plated stainless steel.

Please Note: These Back Pressure Regulator Holders are designed to allow each cartridge to operate at its stated pressure setting when tightened to 20 in-lbs. of torque. To approximate this level of torque, first finger tighten the Holder, then tighten an additional 1/8 – 1/4 turn with the supplied wrenches.