The pH of the samples was determined by a pH meter (SCHOTT Instruments; SI Analytics Mainz, Mainz, Germany).
Ph meter
Manufactured by Schott
Sourced in Germany
The PH meter is a device used to measure the pH, or acidity, of a liquid solution. It consists of a probe that is immersed in the solution, and a display that shows the pH reading. The PH meter is a fundamental tool for various laboratory applications that require precise pH measurement.
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Lab products found in correlation
9 protocols using ph meter
1
Determining pH using a SCHOTT Instruments pH Meter
2
Measuring Beverage pH with Precision
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The pH of both the fermented beverage and the unfermented control was determined by a pH meter (SCHOTT Instruments; SI Analytics Mainz, Mainz, Germany).
3
Vinegar pH Measurement Procedure
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4
Measuring pH of Fermented Beverages
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The pH of both the fermented beverage and the unfermented control was determined using a pH meter (SCHOTT Instruments; SI Analytics Mainz, Germany).
5
Analytical Methods for Rumen Fermentation
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The gas production was measured using the pressure transducer technique (Theodorou et al., 1994 ). Culture medium pH was measured by a pH meter (Schott, Germany). The SCFA were determined by gas chromatography (Shimadzu, GC-14B, Japan) according to Mao et al. (2007) . The NH3—N concentration was measured by the indophenol method (Weatherburn, 1967 ). The MCP concentration was determined according to Makkar et al. (1982) (link) by spectrophotometer (Thermo Fisher Scientific, NanoDrop 2000c, Wilmington, DE, USA).
6
Chromium(III) Removal via Membrane Extraction
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A detailed diagram of the experimental laboratory-scale unit has been reported elsewhere [1 (link)]. The separation equipment was composed of the vessel with two cylindrical chambers (capacity = 130 cm3 each) equipped with a mechanical stirrer each, and immersed in a water bath, pH meter (Schott, Germany), and thermostat with temperature and water level control system to ensure proper process temperature. Chambers were separated by membrane (active area 15.2 cm2) prepared by soaking PTFE porous polymer film for 24 h in a mixture of the carriers and organic solvents. The final concentration of the carriers in the membrane was changed in the range of 0–80 % v/v, while the volume concentration ratio of the kerosene/o-xylene was constant and equal to 2:1.
Feed solutions were prepared by dissolution the appropriate amount of the chromium(III) chloride in the deionized water. The final concentration was in the range of 0.025 to 1.000 g/dm3. As the stripping solution, 6 M HCl aqueous solution was used. The initial pH of the feed phase was equal to 4. The separation process was carried out at ambient temperature (T = 25 ± 0.5 °C) and atmospheric pressure. The samples were collected both from feed and receiving phase in the defined time intervals
Feed solutions were prepared by dissolution the appropriate amount of the chromium(III) chloride in the deionized water. The final concentration was in the range of 0.025 to 1.000 g/dm3. As the stripping solution, 6 M HCl aqueous solution was used. The initial pH of the feed phase was equal to 4. The separation process was carried out at ambient temperature (T = 25 ± 0.5 °C) and atmospheric pressure. The samples were collected both from feed and receiving phase in the defined time intervals
7
Analytical Methods for Rumen Fermentation
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Culture pH was measured by a pH meter (Schott, Germany). The VFAs were determined by gas chromatography (Shimadzu, GC-14B, Japan) according to Mao et al. [20 (link)]. The NH3-N concentration was measured by the indophenol method [21 (link)]. The MCP concentration was determined according to Makkar et al. [22 (link)] by spectrophotometer (Thermo Fisher Scientific, NanoDrop2000c, Wilmington, DE, USA).
8
pH Determination of Analyzed Samples
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The pH of the analysed samples was determined using a pH meter (Schott Instruments; SI Analytics Mainz, Germany). All assays were performed in triplicate.
9
Fermented Beverage pH Measurement
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The pH of both the fermented beverage and the unfermented control was determined by a pH meter (SCHOTT Instruments; SI Analytics Mainz, Mainz, Germany).
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