pH Meters
pH meters are scientific instruments which measure hydrogen-ion concentrations in a solution and indicate acidity and alkalinity. They measure the difference in electrical potential between a pH electrode and a reference electrode. In appearance, they can be a rod-like glass with a bulb containing the sensor at the bottom which is dipped into the solution. Alternatively, they can be a complex laboratory instrument with computer interfaces and several inputs to adjust for variations in pH levels caused by the ambient temperature. There are various types of pH testers. Pocket-sized and handheld portable meters are suitable for field work and the factory floor. Bench top models are the most accurate while in-line pH transmitters are suitable for process control and harsh environments. Potentiometric pH meters measure the voltage between two electrode and display the result converted into a pH value. The highly specialised holographic pH sensors measure colorimetrically. It is very important to calibrate these meters so they should be dipped into buffers or into a test solution of known pH value. pH meters have applications for both the laboratory and field work. They are used in agriculture, brewing and for checking water quality. In healthcare they ensure solutions are safe when applied to patients or lethal as disinfectants.
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Carl Roth Fatty Acid Methyl Ester Mixture 8705.1 - General Lab (1 Supplier)
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Carl Roth Fatty Acid-Referenz-Mixture 5108.1 - General Lab (1 Supplier)
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Carl Roth Humic Acid Sodium Salt 7824.2 - General Lab (1 Supplier)
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Carl Roth Huminic Acid 7821.1 - General Lab (1 Supplier)
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Carl Roth Hydrochloric Acid CN61.1 - General Lab (1 Supplier)
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Carl Roth LABEL REMOVER 130 P530.1 - General Lab (1 Supplier)
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Carl Roth L (+)-Ascorbic Acid 100 g Min. 99pct. 3525.1 - General Lab (1 Supplier)
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Carl Roth L (+)-ascorbic acid 500 g 3525.3 - General Lab (1 Supplier)
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Carl Roth L (+)-ascorbic acid sodium salt 3149.2 - General Lab (1 Supplier)
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Carl Roth L(+)-tartaric acid 250g K302.1 - General Lab (1 Supplier)
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Carl Roth Nalidixin Acid 10 G CN32.1 - General Lab (1 Supplier)
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Carl Roth Ortho Phosphoric Acid 85pct. 9079.1 - General Lab (1 Supplier)
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Carl Roth P Cumar Acid 1 G 9906.1 - General Lab (1 Supplier)
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Carl Roth Ph-Buffer Solution 500ml A517.2 - General Lab (1 Supplier)
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Carl Roth Ph-Buffer Solution 500ml P713.2 - General Lab (1 Supplier)
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Carl Roth pH Buffer Solution pH 700 500ml A518.3 - General Lab (1 Supplier)
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Carl Roth pH Buffer Solution pH 900 1L A519.1 - General Lab (1 Supplier)
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Carl Roth pH Buffer Solution pH 900 A519.3 - General Lab (1 Supplier)
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Carl Roth Phosphate Buffered Formaldehyde P087.3 - General Lab (1 Supplier)
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Carl Roth Stearic Acid 5Kg 9459.2 - General Lab (1 Supplier)
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Carl Roth Succinic acid disodium salt hexahydrate 3195.1 - General Lab (1 Supplier)
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Carl Roth Tannin 100g, tannic acid 2726.1 - General Lab (1 Supplier)
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Carl Roth Valerenic Acid 4712.1 - General Lab (1 Supplier)
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Carl Roth Vancommycin min. 900 t./mg 0242.2 - General Lab (1 Supplier)
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Carry Case for Model 350 - Jenway (1 Supplier)
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