What is pH ? Discuss one method for its determination.
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While mini devices can be used with sensor spots, and flow-through cells, the micro pH meters work with our different microsensor designs based on a 140 µm optical fiber. All PreSens fiber optic pH meters are controlled via PC and come with an easy-to-use software.
The benchtop pH analyzers are compact systems with a small footprint so they can easily be installed in any measurement set-up. They are available in single-channel or multi-channel versions - for simultaneous read-out of multiple sensors. The single-channel pH meters pH-1 miniand pH-1 micro additionally have analogue in- and outputs and an open communication protocol that allows to digitally integrate the devices in control systems. pH-1 micro is also compatible with our Automated Micromanipulator system and the PreSens Profiling Studio software for micro-profiling applications.
The special fiber optic pH readers for integration in shaking incubators are controlled with a PC from the outside. These systems allow online and contactless pH monitoring in microbial or cell culture. Highly parallelized measurements can be conducted with these devices, measuring pH in a multitude of samples simultaneously.
The detector units for pH imaging are compact, handheld fluorescence microscopes which are powered via USB. With these devices optical pH sensor foils can be read out and pH distributions visualized 2-dimensionally. Single images or time-series measurements can be conducted, with each image containing the information of thousands of single measurement points.
The benchtop pH analyzers are compact systems with a small footprint so they can easily be installed in any measurement set-up. They are available in single-channel or multi-channel versions - for simultaneous read-out of multiple sensors. The single-channel pH meters pH-1 miniand pH-1 micro additionally have analogue in- and outputs and an open communication protocol that allows to digitally integrate the devices in control systems. pH-1 micro is also compatible with our Automated Micromanipulator system and the PreSens Profiling Studio software for micro-profiling applications.
The special fiber optic pH readers for integration in shaking incubators are controlled with a PC from the outside. These systems allow online and contactless pH monitoring in microbial or cell culture. Highly parallelized measurements can be conducted with these devices, measuring pH in a multitude of samples simultaneously.
The detector units for pH imaging are compact, handheld fluorescence microscopes which are powered via USB. With these devices optical pH sensor foils can be read out and pH distributions visualized 2-dimensionally. Single images or time-series measurements can be conducted, with each image containing the information of thousands of single measurement points.
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a figure expressing the acidity or alkalinity of a solution on a
logarithmic scale on which 7 is neutral, lower values are more acid and
higher values more alkaline. The pH is equal to −log10 c, where c is the hydrogen ion concentration in moles per litre.
A pH indicator is a chemical compound that is added to a solution in order to determine the pH of the solution more easily. Basically, the pH indicator can detect hydrogen ions and causes the color of the solution to change depending on the pH level. Litmus paper contains a pH indicator that turns the paper either red or blue depending on the pH level. Try comparing different indicators, such as methyl orange or crystal violet with the pH paper to see the accuracy of the litmus paper.
A pH indicator is a chemical compound that is added to a solution in order to determine the pH of the solution more easily. Basically, the pH indicator can detect hydrogen ions and causes the color of the solution to change depending on the pH level. Litmus paper contains a pH indicator that turns the paper either red or blue depending on the pH level. Try comparing different indicators, such as methyl orange or crystal violet with the pH paper to see the accuracy of the litmus paper.
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