Puncture Probes

Polestar’s puncture probe sensors are configured for measurements of oxygen (O2), pH, or carbon dioxide (CO2) in applications such as package integrity testing, small volume samples, and soft-tissue monitoring. The probe is constructed from a small-diameter fiber optic capped with a thin layer of Polestar’s oxygen-sensing chemistry fixed within the lumen of a stainless steel hypodermic needle. Coring and non-coring designs are available in sizes ranging from 14 gauge to 24 gauge. Response times (t90) for Polestar’s puncture probes are <10 seconds for measurements of gas-phase oxygen and <20 seconds for dissolved oxygen.