A new development in viscosity analysis for the R&D of


petrochemicals Viscosity is an incredibly


important property to measure when it comes to the research and development, and quality assurance of petrochemicals. The viscosity of lubricating oils and greases at low and high temperatures is used to indicate, for example, their performance and deterioration. Viscosity measurement can also be used to study physical property changes of polymers as they bond with monomers and other polymers in processes such as polymerization, and crosslinking/curing. Viscosity measurement methods widely adopted in petrochemistry labs have many drawbacks including tedious and time-consuming instrument cleaning and difficulties in dealing with sample hardening and volatilization.


However, these problems are solved with the EMS-1000S Viscometer by Kyoto Electronics Manufacturing (KEM). The EMS-1000S measures samples in autoclavable and hermetically sealable tubes that contain a metallic probe made to spin in the sample medium. The system prevents direct contact between the sample and the instrument, eliminating the need for cleaning between measurements. The system also allows you to control the gaseous atmosphere your sample is exposed to while preventing harmful vapors from escaping. The viscometer’s measurement temperature can be adjusted quickly and accurately, and it is possible to study the hardening/ curing process of samples over a measurement range of 0.1 to 1,000,000mPa.s.


Lovingly adopted by major oil producers such as PetroChina Company Limited, the EMS-1000S by trusted analytical instrument maker, KEM, is making viscosity measurement easier and more efficient, inspiring new in-house measurement standard methodologies. *Please note that the EMS-1000S measures absolute viscosity (unit mPa.s), and employs a new type of measurement methodology yet to be established as an internationally recognized measurement standard.


More information online: ilmt.co/PL/qjLb 60543pr@reply-direct.com


For More Info, email: email:


Tips for improving the accuracy and repeatability of petroleum product


For More Info, email: email:


density measurements There are several


For More Info, email: email:


important factors to consider when measuring petroleum products with an oscillation-type density meter. One such factor is sample viscosity. For samples exceeding 1,000mPa·s/1000cP,


your meter’s viscosity compensation function should be enabled. This function is widely employed for viscous oil samples to account for the unavoidable loss of instrument oscillatory energy that they cause. Proper cleaning of your instrument’s measurement cell is vital to achieve precise, consistent results. Choose the correct cell cleaning liquid/s for your sample, and subsequently perform proper cleaning and drying operations. For petroleum samples, clean after every measurement using a hydrocarbon-based solvent like toluene, then dry with acetone or ethanol. For stubborn samples, leaving the cell filled with cleanser for a set period should prove effective. Another factor is checking your instrument’s measurement accuracy, ideally performed at the start of each day by measuring pure water. Periodic testing with density standards and performing calibrations with water and dry air is highly recommended. Kyoto Electronics Manufacturing provides a range of density reference standard liquids made in their ISO 17025- and ISO 17034-compliant calibration laboratory. Their quality ensures that you can check the operational health of your density meter with the utmost confidence.


More information online: ilmt.co/PL/7n42 61638pr@reply-direct.com


For More Info, email: email:


For More Info, email: email:


WWW.KEM.KYOTO/EN


3 tips for improving accuracy and repeatability when measuring the


Acid Number of petroleum products Acid Number (AN) is a standard measure of acidity in crude oils and oil products, serving as a crucial indicator of quality and safety of use. AN is determined by the amount of potassium hydroxide required to neutralize acids present in one gram of oil. KEM’s AT-710 series titrators are perfect for measuring AN, complying with standards such as ASTM D664 and ASTM D3242. In this article, we would like to introduce 3 tips to improve the accuracy and repeatability of AN measurements.


First up, reduce the time between sample preparation and measurement to minimize CO2 from the air dissolving into the solvent. If you are not


covering your samples, we suggest setting up an additional burette that adds solvent just before measurement. If you are experiencing poor repeatability or failing to attain a clear inflection point, we recommend purging the beaker’s headspace with nitrogen during measurement. Our next tip is to perform electrode restoration. Working with organic solvents causes electrodes to lose sensitivity unless restored (ideally after each measurement). This involves rinsing off sample with solvent, rinsing with pure water to dissolve precipitates at the sleeve, soaking in pure water to restore its aqueous gel layer (soaking time varies between methods), and finally rinsing again with solvent. When wiping off solvent with cleaning tissue, avoid generating static by applying light pressure and a gentle motion. Our last tip regards sample stirring speed. We recommend using a constant speed when measuring, vigorous enough to achieve proper agitation for measurement, but gentle enough to prevent sample spattering and the introduction of air into sample this promotes. If using our titrators, we recommend Stir Speed 2.


More information online: ilmt.co/PL/k1Gd For More Info, email:


email:


For More Info, email: email:


For More Info, email: email:


59666pr@reply-direct.com


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88