Eutech Instruments / Thermo Scientific ... offers a wide range of pH meters that measure pH values in various educational, laboratory and industrial applications - [USA > e]
Metrohm Meters for pH, ion concentrations and conductivity. The web site shows you how to find the right electrode, pH meter and accessories for your application - [CH > e]
Ebro Herstellung hochgenauer, portabler Messgeräte für Temperatur, Druck, Feuchte, pH-Wert, Öl, Salz sowie alle physikalischen Größen - [D > d, e, f, cn, ...]
Jumo pH- und Redox-Elektroden, Leitfähigkeitsmesszellen, Mess- und Regelgeräte für pH und Redox, Leitfähigkeit, Reinstwasser und Sauerstoff, Sensoren, Armaturen für Messwertaufnehmer - [D > d, e]
Kuntze GmbH ... entwickelt seit mehr als 60 Jahren Mess- und Regeltechnik für die online Analyse wässriger Lösungen - [D > d, e]
IQ Scientific Instruments, Inc. The ISFET pH Source for Rugged Benchtop, Handheld and Pocket-sized pH Meters with Stainless Steel pH Probes - [USA > e]
Endress+Hauser ... is a leading supplier of measuring instruments and automation solutions for the industrial process engineering industry - [UK > e]
Jencons (Scientific) Limited ... is a leading laboratory equipment supplier in the UK and offers a wide range of pH Meters - [UK > e]
Jenway ... is a leading U.K company designing and manufacturing high quality scientific instrumentation - [UK > e]
Palintest The Palintest Micro 500 pH Meter combines pH and temperature measurement with millivolt readout for oxidation-reduction potential and specific ion electrodes - [UK > e]
The author- or copyrights of the listed Internet pages
are held by the respective authors or site operators, who are also responsible
for the content of the presentations.
To add your company or product site to this index please use the
registration form or send us a eMail.
Metrological concepts like traceability or measurement uncertainty form important parts of international treaties and normative documents. Their applications e.g. in chemical or food analysis or in environmental monitoring are entering our daily life. The development of those concepts has been driven by demand on a world-wide scale from trade, industry and the legal systems. In the future, no chemist, geochemist, chemical , civil or environmental engineer and no other specialist dealing with chemical measurement data, and no decision maker, neither in trade and industry, in public or medical services, in the political and diplomatic arenas or in academic research can afford not to become acquainted with metrology, its concepts and impact.
This book provides a basic overview over the relevant metrological concepts like traceability, ISO uncertainties or cause-and-effect diagrams. The applications described in great detail range from progression-of-error type evaluation of the measurement uncertainty budget to complex applications like pH measurement or speciation calculations for aqueous solutions. The consequences of a measurement uncertainty concept for chemical data are outlined for geochemical modeling applied to transport in the subsurface and to nuclear waste disposal. Special sections deal with the deficits of existing thermodynamic data for these applications and with the current position of chemical metrology in respect to other quality assurance measures, e.g. ISO 900x, GLP, European and U.S.-American standards. The CD-ROM accompanying the book provides two illustrative programmes (for IBM PCs and derivatives; with manuals and example data sets) and important official documents and guides in PDF format.
