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pH Measurement Theory vol4

4. Comprehensive pH theory In the previous sections the practical aspects of pH measurements were discussed. This chapter will principally deal with the theoretical background to pH measurements and is...

PH Electrodes – Basic questions vol4

How is the temperature compensated when measuring conductivity? The conductivity measurement is strongly temperature-dependent (about 2% variation per °C). Results can only be compared if the temperature of...

pH Measurement Theory vol3

3.Troubleshooting guide for pH measurements Problems which arise during pH measurements can have different sources; from the meter, cable and electrode, down to the buffer solutions, measuring temperature and...

Autosampler Vials: Are You Getting Out What You Put In?

Discover the importance of using inert-glass vials for your samples. You’ll hear how these vials prevent loss of your analytes of interest to the vial wall and reduce the chance of contamination, leading to...

PH Electrodes – Basic questions vol3

What is the meaning of the sensor icon in the instrument’s display? The icon indicates the condition of the electrode. It is update after a successful calibration. No icon is displayed before the first...

pH Measurement Theory vol2

Electrode selection and handling For optimal pH measurements, the correct electrode must first be selected. The most important sample criteria to be considered are: chemical composition, homogeneity...

PH Electrodes – Basic questions vol2

How to clean pH and ORP electrodes? Find information in the operating manuals, the pH guide booklet and in the pH TroubleShooter on www.electrodes.net. In general:   Blockage of diaphragm with silver...

Derivatization in HPLC

HPLC is a method of choice for the qualitative and quantitative determination of organic and inorganic substances into different kind of matrices. Unfortunately, many substances of interest cannot be directly...

COVID-19 RESPONSE: FREELY AVAILABLE ISO STANDARDS

Το ISO εξαιτίας της κρίσης του κορονοϊού Covid-19 διαθέτει σε read-only εκδόσεις στο internet δωρεάν ISO σχετικά με την διαχείριση , προστασία και εξοπλισμό που απαιτείται.
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pH Measurement Theory vol1

Introduction to pH Why do we classify an everyday liquid like vinegar as being acidic? The reason for this is that vinegar contains an excess of hydronium ions (H3O+) and this excess of hydronium ions in a...

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