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pH and ORP Sensor Installation Tips

This brief article describes some common considerations with sensor installation and removal, as well as best practices for mounting.

pH and ORP Sensor Cleaning

Answers to common questions on how to clean off build-up and coating on pH sensors and ORP sensors.

pH Glass Membrane Types

Hamilton offers several different options for pH membrane glass. This article describes the purpose of each glass type.

pH and ORP Sensor Reference Design

Pre-Pressurized vs. refillable vs. polymer vs. viscous electrolyte? This article discusses basic pH reference design benefits for each product family.

pH / ORP Sensor Storage and Regeneration

How to store a pH sensor? How long can the sensor sit dry? How can the sensor be regenerated? Learn more in this article.

pH Sensor Shelf Life and Expiration

This article discusses common questions about pH sensor shelf life and pH sensor expiration.

pH Drift From Autoclavation or SIP

This technical article dives into why pH sensor may exhibit drift after autoclave or SIP cycles and glass membranes that limit drift.

pH Basics Video

Ever wonder how pH sensors work? This video discusses basic design and functionality of glass membrane combination pH sensors.

ORP Calibration Basics

This article discusses the basic design of ORP sensors and the need for proper calibration procedures.

Common ORP Applications

ORP (redox) is often mentioned frequently alongside pH measurement. This paper looks as some of the more diverse applications for ORP including wine-making, mining, and water treatment.

What is a Liquid Earth (LEVP) for a pH sensor?

Some Hamilton process pH sensors have the option for a liquid earth (LEVP) connection; however many end-users are unfamiliar with its benefits.

Temperature Influence on DuraCal pH Buffers

Temperature has a direct effect on the pH of liquid buffer solutions. This page provides one easy place to see the temperature effects on all Hamilton pH buffers.

Connecting Arc pH / ORP Sensors to the Bioreactor

There are several methods for connecting Arc pH and ORP sensors to the bioreactor. This article explores your options.

Stability and Accuracy of DuraCal pH Buffers

Questions often come up regarding pH buffers, their stability (shelf life), and impact on accuracy. This knowledgebase article takes on many of these topics.

Tips to Improve pH Measurement

Accurate pH control is fundamental for a wide variety of industrial bioprocesses. Some of those processes are based on cell or microbial cultures where the pH value has to be kept within a narrow range. This video shows the three most helpful tips to ensure optimal growth and product yield.

ORP Basics

This article examines some basic questions around ORP (Oxidation Reduction Potential). It includes a definition of ORP, how ORP sensors work, and the external effects of pH and temperature.

Comparing Glass Membrane Versus Optical pH Sensors

In biopharma applications there are two technology options for continuous pH measurement - glass membrane and optical. This article will explore both technologies along with their benefits and limitations.