20 Analytical Instrumentation L-K Industries introduces a new Criterion Water Bath System New Compact Distillation Tester
Petrotest (Germany), a division of Anton Paar, offers the new ADU 4+ automatic distillation tester with a built-in cooling system, fire extinguisher and integrated computer with external flat screen monitor and ADUPro software. The compact, rugged unit performs distillation testing at atmospheric pressure of aviation fuels, gasoline, turbine fuels, fuel oils, kerosene, naphtha, solvents, special boiling point spirits and a wide variety of petroleum products.
Performing distillation testing manually, typically requires considerable operator experience to be done properly and safely. Reading a thermometer, observing the receiver, manually adjusting the heating and recording test results must all be done accurately and simultaneously. With the Petrotest ADU 4+ all of these steps are done automatically using state-of-the-art electronics, avoiding incorrect ASTM D86 measurements and eliminating operator bias.
It is designed to operate in Class 1, Group D, Division 1 areas. The unit features digitally controlled Temperature, programmable in either Fahrenheit or Centigrade. The unit will hold 2 gallon bottles of solvent and 14 Long Cone tubes. It will maintain the programmed temperature within the specified ASTM/API temperature guidelines.
L-K Industries INC. 6952 Lawndale, Houston, TX 77023-2599
PO Box 230305, Houston, TX 77223-0305 Phone: (713) 926-2623 • Fax: (713) 926-7736 Web:
www.lk-ind.com • Email:
lkind@lk-ind.com
Reader Reply Card No 64 Oil in Water Measurement
Since 1980 the infrared based method ASTM D3921 was the standard method for measuring total petroleum hydrocarbon (TPH) concentrations in water. This method requires the use of the extraction solvent 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113, Freon).
In 1989 the phase out of ozone-depleting substances (CFCs and HCFCs) was banned by Montreal Protocol. The infrared test methods continuously started to become replaced by gravimetry (e.g. EPA 1664A) or gas chromatography (e.g. ISO 9377-2). However, these other methods require more laborious and careful operation in a laboratory environment.
The infrared test method ASTM D3921 still found use in spectroscopic applications at many industrial sites and remote places. Its unique advantages like accuracy, short measurement time and ease of use maintained its role as an important test method. In 2001 the related Freon-based standard method DIN38409-H18 was withdrawn.
Finally in 2012 the ASTM 3921 standard came into discussion for withdrawal, marking the end of a long history using CFCs for infrared spectroscopy.
In 2011 the new standard method ASTM D7678 was published by ASTM International. It uses environment-friendly cycloalkanes for the extraction rather than CFCs. This method and the availability of new infrared lasers allows the transition from old CFC-based methods while maintaining the advantages of infrared spectroscopy.
By the invention of midinfrared quantum cascade lasers (QCL) a new form of liquid spectroscopy became possible. Eralytics GmbH (Austria) uses this QCL technology within the portable and field- proven ERACHECK instrument. The ERACHECK enables fast, easy and reliable measurements in harsh environments. And moreover this instrument is complying with the new standard method ASTM D7678.
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The modular ADU 4+ provides fully automatic analysis of boiling characteristics according to ASTM D86, D850 and D1078- IP 195. The unit can also be customised to perform user-specific applications. A powerful 1200-watt heater provides sample heating up to 450 degrees C (depending on sample and stem correction mode). All distillation criteria, e.g. cooling temperature and chamber tempering, can be switched over automatically from group 1 to 4 during the distillation. The unit includes glassware set according to ASTM D86 (Group 1-4). With additional accessories, the unit is suitable for testing of aromatic hydrocarbons and volatile organic liquids according to ASTM D850 and ASTM D1078.
The ADU 4+ is designed as a complete ready-to-go system that occupies only a minimum amount of laboratory bench space. The highly versatile unit features volume detection by solid-state light barrier system, rugged high-grade stainless steel powder coated cabinet, temperature-controlled swing-out receiver chamber and digital display with membrane keys.
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APRIL / MAY 2013 •
WWW.PETRO-ONLINE.COM
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