Protein Gaurd(TM) pH electrode is guaranteed against damage from exposure to protein for 6 months. If this electrode malfunctions due to protein within 6 months of purchase, we will replace it free of charge.

Measuring pH of samples containing proteins such as supernate from cell culture, urine, serum, and tissue homogenates has always been a challenge because the protein rich samples tend to clog up the electrode. Our Protein Guard(TM) clog free pH electrode has a unique design that includes a retractable spring-loaded sleeve to easily renew the reference junction and unclog the electrode.

Protein Guard(TM) Flat Surface Electrode is available for surface samples which contain proteins.

Complete Protein-Guard(TM) Measurement Systems

Purchase our Protein-Guard(TM) electrode by itself or as a complete ArrowLabb(TM) Measurement System. The complete system includes everything you need to measure, log and graph all in one. System includes Protein-Guard(TM) electrode, advanced digital meter plus our exclusive logging and plotting software and more.Full details on complete pH systems.