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Accurately measuring the pH of hand sanitizer is a difficult process. Using a conventional sensor offers challenges such as unstable readings and longer response times which can introduce uncertainty into the measurement process. The high alcohol content or alkaline nature of some sanitizers may also affect the sensor membrane. These factors, along with others mentioned in the pH Measurement of Hand Sanitizer, can affect the overall accuracy of results.
Use of a specialized sensor such as METTLER TOLEDO’s InLab® Max Pro ISM can help to reduce uncertainty and improve results reliability when measuring the pH of hand sanitizer. An immovable glass sleeve junction ensures faster outflow of electrolyte into the sample, helping to ensure stable readings and shorter response times while reducing the potential for junction clogging. Additionally, the robust HA glass of the sensor membrane is easy to clean and tolerates highly alkaline pH conditions without compromising measurement accuracy. Taken together, these features make the InLab Max Pro ISM extremely appropriate for measuring the pH of hand sanitizer.
To learn more about how the specialized InLab Max Pro ISM can help you measure the pH of hand sanitizer quickly, accurately and repeatably, download the application note now.
Unstable readings while measuring the pH of hand sanitizer?
Watch our video to see how METTLER TOLEDO sensors can help overcome challenges.
Frequently Asked Questions (FAQs): Measuring the pH of Hand Sanitizer
What is hand sanitizer?
It is a liquid or gel-based agent that is used to kill a wide range of bacteria or viruses present on the hands.
What are essential components of hand sanitizer?
Hand sanitizer can be classified into two types:
- Alcohol-based, which typically contain isopropyl alcohol, ethanol, or a mixture of the two making up 60 – 90 % of the product.
- Non-alcohol-based sanitizers contain quaternary ammonium salts like benzalkonium chloride.
Other components may include glycerol that acts as a moisturizer and added fragrance.
What is the general pH range of a hand sanitizer?
The pH of hand sanitizers varies with composition. Alcohol-based hand sanitizers have a pH around neutral whereas sanitizers that use quaternary ammonium salts have a pH in the alkaline range.
