8 Analytical Instrumentation Dissolved Species Monitor for Biofuel Research
Hiden Analytical (UK) introduce a new and novel cuvette style interface for the Hiden HPR-40 membrane inlet mass spectrometer (MIMS) series. Specifically engineered for the researcher investigating gaseous species generated by algal photo-responsive reactions, the cuvette is engineered to be both flexible and user maintainable and features inert materials throughout.
Concentric transparent acrylic cylinders, sealed by a removable base and cap, form an inner reactor zone with an outer sleeve, the latter to enable thermally stable water to be re- circulated to maintain a uniform reactor temperature. A magnetically driven impeller, located close to the integrated membrane surface, maintains overall media consistency.
Two alternative sets of acrylic sleeves are supplied for user-selection of the reactor capacity. Standard reactor volumes are 25 cc and 50 cc, and two dark shields are included to enable measurement with illumination excluded. Two membrane holders are also supplied to provide a 4-fold difference in membrane surface area, the larger area being preferred for enhanced transmission of organic vapours and the smaller for dissolved gas measurement. Connectors are included for water connectivity and thermocouple insertion.
The Hiden HPR-40 MIMS systems are available with alternative process interfaces including media insertion probes, membrane carriers for recirculating media, stream-switching modules for automatic cycling through multiple process vessels (up to 80 streams), fermentation top-gas measurement.
Reader Reply Card No 26
Maximise Performance With GC Accessories and Gas Management Products
Supelco (USA) has published a GC Accessories and Gas Purification/Management Brochure to help labs ascertain what they need to streamline their GC instrument maintenance. Selecting the proper items for routine system maintenance and new column installation can save costly downtime and rework; also, helps to provide good chromatography results. In the chromatography lab, the upgrade and replacement of parts and accessories for the GC system can bring on many challenges and questions due to the vast array of commercially available products. This brochure offers Supelco’s unique products, as well as products from some of the most trusted names in the industry, to assist in making the selection process easier.
In addition to high-quality GC columns, Supelco also offers the most commonly needed GC accessories; including, inlet liners, seals and septa;
purifiers and gas management products; GC tools and fittings; PID lamps and high-purity solvents. Reader Reply Card No 27
Standard Specification for Diesel Fuel Oils Now Includes ASTM D7345
ASTM recently published its latest version of the ASTM D975-12 Standard Specification for Diesel Fuel Oils, which included an alternate distillation method, ASTM D7345. This alternate method achieves significant response time improvements compared to the conventional ASTM D86 method. PAC (USA), a specialist global provider of advanced analytical instruments for laboratories and online process applications, developed the ISL PMD 110 and ISL MicroDist, which utilises this alternative method.
The ISL PMD 110 is a laboratory instrument that determines the complete distillation curve within 8 minutes using data from one phase transition, evaporation, thus eliminating the process of condensation. It is based on fundamental thermodynamic dependencies. Immediately after test completion, distillation characteristics are calculated from collected data with an ASTM D86 / ISO 3405 compliant detailed report.
This instrument is universal, reliable, and applicable to any petroleum product, without prior knowledge of its properties. The ISL PMD 110 is easy to use since no heating power programming or group selection is necessary to start a test. It also minimises the amount of sample waste since it uses only 10ml of sample for the test. Since it is a portable unit requiring no sample preparation, it is also a perfect solution for terminals and mobile labs. It is able to compare the measured distillation curve with up to 80 user defined specifications and just give an in spec / off spec answer.
The ISL MicroDist utilises the same technology in the process that the ISL PMD110 utilises in the lab. The MicroDist is used for process optimisation and product certification and control of blending processes for various refining streams including motor gasoline, fuel oils, naphtha and diesel. Customers are able to have greater control over their process since full distillation analysis can be provided every 7 minutes. This enables continuous process optimisation and production control throughout.
“PAC is committed to providing leading technology to its customers in the form of both lab and process applications,” says Daniel Benitez, PAC Vice-President of Process Analytics. “By providing the same technology at a variety of aspects in plants and refineries, we are helping customers create quality products on spec.”
Reader Reply Card No 28
Comply with Highly Regulated Oil in Water Measurements Using Portable Infrared Analysers
The Petroleum Industry – both offshore and onshore -- has regulations that limit the amount of oil in discharged water. Fixed filter infrared (IR) analysers have been used to test oil levels in produced water on drilling platforms for over 45 years for a number of reasons. On oil rigs where real estate is at a premium, infrared analysers such as the Wilks (USA) InfraCal TOG/TPH Analysers are compact (typically 6 inches or 15 cm square, weighing less than 5 lbs) and rugged enough to withstand salt air and a rustic
lab set up. The operation can be done by non-technical personnel in less than 15 minutes. Infrared methods also match well with onshore laboratory testing making it a reliable way to keep effluent levels under the regulated amount.
US EPA methods 418.1 and 413.2 were used extensively worldwide until the Montreal Protocol called for Freon (the solvent used in the analysis) to be phased out. Infrared analysis using tetrachloroethylene (perchloroethylene) for the extraction process is still a regulatory method in the North Sea to ensure compliance with discharge permit levels.
As IR was typically used as a quick verification that oil and grease levels were below the regulated level, other solvents such as tetrachloroethylene, hexane, n-pentane or S-316 are now widely used on both offshore and onshore oil platforms even though there is not an associated EPA method for these solvents. There is an ASTM method (D-7066) for infrared oil in water analysis using S-316. Trying to do gas chromatographic or hexane/gravimetric tests on oil drilling platforms is either too time consuming or too complicated. IR is, therefore, used as a daily check with a monthly sample typically going onshore for a regulatory test.
Reader Reply Card No 29 Annual Buyers’ Guide 2013 •
www.petro-online.com Reader Reply Card No 30
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