Patent ID: 9404878
Filing Date: 2016-08-02
CPC Classification: G01N

Claim Text:
1. A system for detecting a hydrogen peroxide (H 2 O 2 ) concentration in a cold aseptic filling system that uses a peracetic acid (PAA)-based cleaning solution, the system comprising: a primary conduit through which the PAA-based cleaning solution is circulated; a bypass conduit fluidly coupled to the primary conduit; a conductivity sensor positioned in the bypass conduit, the conductivity sensor configured to receive a portion of the PAA-based cleaning solution from the primary conduit via the bypass conduit and to provide a signal representative of the electrical conductivity of the PAA-based cleaning solution and to compare the signal to a threshold value associated with a setpoint H wherein the concentration of PAA in the PAA-based cleaning solution is depleted over time, wherein the cold aseptic filling system is configured to dose the PAA-based cleaning solution with additional PAA to counteract the depletion, and wherein the portion of the PAA-based cleaning solution provided to the conductivity sensor is returned to the primary conduit.