Analytical Instrumentation New Metrohm Brochure and Webpage ‘Petrochemical Analysis’
Crude oil is the «lubricant» of the world’s economy. Numerous parameters define the quality of petroleum products and their derivatives. Metrohm’s new brochure ‘Petrochemical Analysis’ is a summary of the most important of these quality parameters and the methods used to check them. Metrohm’s complete know-how (instruments and applications) on petrochemical analysis is accessible on the new webpage
petro.metrohm.com
‘Petrochemical Analysis’, which can be ordered free of charge, draws on the Company’s comprehensive know-how in assuring the quality of petroleum products. Using the most important national and international standards (ASTM, DIN, ISO, UOP) as a basis, ‘Petrochemical Analysis’ suggests methods as well as instrumentation suited best to check crucial parameters such as base number (TBN), acid number (TAN), hydroxyl number, chlorine content, water content, oxidation stability, elemental sulphur and sulphuric compounds, heavy metals, pH value and many more.
Methods covered include potentiometric, colorimetric and Karl Fischer titration (volumetric and coulometric), oxidation stability, ion chromatography, voltammetry, atline and online process analysis. ‘Petrochemical Analysis’ is a highly valuable tool for anyone who is involved in the professional quality assurance of petroleum products.
The easiest way to access Metrohm’s complete know-how on petrochemical analysis is the website
petro.metrohm.com Here you can find a multitude of applications as well as information on analytical instrumentation for the petrochemical industry. Downloads are free of charge.
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Fully Automated Determination of TAN/TBN in Oil Samples
Finding water …
… is much easier with Metrohm systems for moisture analysis. The shelf-life, function or quality of your product is determined by the water content? We’ve got what it takes to give you perfect control over this crucial para- meter:
Karl-Fischer-titrators and coulometers for determining water contents from 100% down to the ppm-level
Metrohm presents the 864 Robotic Balance Sample Processor, an advanced system for fully automated TAN/TBN determinations in petroleum products. Capabilities include weighing, solvent addition, waiting times for complete dissolution and optimised electrode cond- itioning procedures between samples, as well as convenient collection of all data in a database. Results are available within minutes and even very low TAN/TBN values can be determined with reprod- ucibilities better than 2%.
ASTM D 664 and ASTM D 2896 describe two methods for the determination of TAN and TBN based on potentiometric titration of the acidic and basic constituents, respectively. If carried out manually, these procedures are time-consuming and labour-intensive. Further drawbacks are the handling of toxic solvent mixtures and the tedious cleaning of oil-smeared beakers and electrodes.
All of this can be avoided with the 864 Robotic Balance Sample Processor, as it allows the complete automation of these procedures from sample preparation all the way to collecting and process- ing results in a comprehensive database. A unique feature of the system is the patented technique of weighing the sample directly on the rack. There is no simpler way to prepare a sample – just position it on the rack and press START, all other steps are carried out fully auto- matically. This includes taring of the titration beaker as well as transferring the correct amount of sample. This technique significantly improves the accuracy and reproducibility of results.
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complete automation of sample prepara- tion and processing
kf.metrohm.com 31
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Annual Buyers’ Guide 2010
Ecknauer+Schoch ASW
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