General
Pepsin content	1 %

The Pepsin/HCI solution in the 125-ml bottle from Chauvin Arnoux is intended for cleaning electrode diaphragms contaminated by proteins. This special cleaning solution is designed for the removal of protein deposits that may form, for example, when using pH or redox electrodes in biological or chemical processes. The formulation is based on a mixture of pepsin and hydrochloric acid (HCI), with the pepsin content specified as 1 %. The solution is filled in a single-use bottle suitable for use in laboratories or industrial process monitoring.

Cleaning solution for protein-contaminated electrode diaphragms
The Pepsin/HCI solution is specifically developed for the maintenance of electrodes whose diaphragms are contaminated by organic protein substances. Such contamination can impair measurement accuracy and reduce the service life of the electrodes. The combination of pepsin, a proteolytic enzyme, and hydrochloric acid enables effective breakdown and removal of the proteins. The 1 % pepsin concentration represents a balanced approach that provides sufficient cleaning performance without damaging the sensitive materials of the electrodes.

Applications
The cleaning solution is primarily used in process analytics, laboratory chemistry, and environmental technology. It is suitable for electrodes used in applications such as wastewater treatment, the food industry, or pharmaceutical production. In these areas, regular cleaning of electrodes is necessary to ensure consistent measurement results. The 125 ml bottle is designed for use in small to medium-sized laboratories or for targeted maintenance tasks.

Functions and equipment in detail
The solution is supplied in a 125-ml bottle made of suitable plastic material to ensure the chemical stability of the liquid. The bottle is fitted with a closure that enables safe storage and controlled dispensing. Use involves directly immersing the contaminated electrode diaphragms into the solution. The duration of exposure and exact procedure depend on the type and degree of contamination and should follow the manufacturer’s instructions.

Technology explained simply
Pepsin is an enzyme that breaks down proteins, thereby dissolving organic contaminants. Hydrochloric acid (HCI) supports this process by lowering the pH of the solution, thus enhancing enzymatic activity. The combination of both components enables efficient cleaning without requiring additional chemical reagents. The 1 % pepsin concentration is sufficient to remove most protein deposits without attacking the sensitive materials of the electrodes.

The bottle is intended for single use and contains no additional additives or auxiliary substances. The solution is not intended for cleaning electrodes contaminated with other substances (e.g. mineral deposits). For such cases, other cleaning agents are required.

Compatibility and accessories
The cleaning solution is specifically developed for electrode diaphragms contaminated by proteins. It is compatible with most standard electrodes used in process analytics. Application is direct onto the diaphragms, after which the electrode should be thoroughly rinsed with water and dried. No specific accessories are included with the bottle; use requires no additional tools or aids.

Mounting and installation
Mounting or installation of the cleaning solution is not required. The bottle is used directly by immersing the contaminated electrode into the solution. The exposure time varies depending on the degree of contamination and should follow the manufacturer’s recommendations. After cleaning, thorough rinsing of the electrode with water and subsequent drying is necessary to remove any residue of the solution.

Advantages in operation
Using the Pepsin/HCI solution enables targeted and effective cleaning of protein-contaminated electrode diaphragms. The solution is easy to apply, requires no additional tools, and ensures rapid restoration of measurement accuracy. The 125-ml bottle provides a practical quantity for use in small to medium-sized laboratories or for targeted maintenance tasks. The specific formulation protects electrode materials and extends the service life of sensors.