Description
Universal indicator sticks pH-Fix are laboratory test sticks for determining pH in the range 5.1 to 7.2. Presented in a square plastic box, these sticks offer a handy format for rapid checks around the weakly acidic to neutral region in analytical laboratories. The pack contains 100 pc(s), providing ample sticks for day-to-day measurements. Part of the pH-Fix series from manufacturer ROTH SELECTION, they belong with pH papers and pH indicators used together with measuring instruments for pH value work. Each pack weighs 0,035 kg, keeping the square plastic box compact for bench or drawer storage. The defined window of pH 5.1–7.2 helps users pick the right stick when samples are expected near neutrality. Application areas cover general labware and pH measurement setups that favour simple indicator sticks for orientation testing. Square plastic packaging maintains order and protection until use. Laboratories monitoring buffer-like samples, process waters or quality-control points in this pH band can include these universal indicator sticks among their standard pH-testing consumables and related pH-Fix variants.
This article is part of pH meters, in pH & electrochemistry.
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Questions about Universal indicator sticks pH-Fix, in square plastic box, pH 5.1-7.2
What is this article?
Universal indicator sticks pH-Fix, in square plastic box, pH 5.1-7.2 is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in pH meters, inside pH & electrochemistry, in Lab instruments.
A pH meter reads the electrode and displays pH, after calibration with at least two buffers. A meter that cannot be calibrated is a voltmeter. Resolution to 0.001 is not the same as accuracy. Portable and benchtop meters differ in the electrodes they accept and in the data they store.
A pH meter is a voltmeter on a glass electrode. The voltage tracks hydrogen-ion activity, and the electrode is converted to pH only after it is adjusted with buffers of known value. Conductivity measures how well a solution carries a current, which for dilute salts tracks concentration. Dissolved oxygen and titration are further electrodes on the same idea: a sensor, a standard, and a reading that is only as fresh as the calibration. Buffer values and chemical identity sit on PubChem. Accreditation of the calibration laboratory is the field of BELAC and EURAMET.
Which category should I open next?
The category is pH & electrochemistry. The sub-category is pH meters. The catalogue is Lab instruments.
Shelves beside this one are pH electrodes & sensors, Conductivity meters & cells, Dissolved oxygen & multiparameter meters, Titrators & electrochemistry systems and pH & electrochemistry accessories.
What should I check before I order?
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When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

