No nitrogen cooling required / Convenient operation: only one calibration for the measurement range from "sulfur-free" to 500 mg/kg
February 2003 With the energy-dispersive XRF system SPECTRO XEPOS for the analysis of sulfur in fuels, SPECTRO advances into measurement ranges that were previously restricted to the significantly more expensive wavelength-dispersive XRF instruments. The bench top XEPOS achieves a detection limit of less than 1 mg/kg for sulfur in fuels.
Recently there has been an international push to reduce the limits of sulfur in fuels. By 2010, the maximum allowed content of sulfur will decrease to 10 mg/kg in gasoline and 50 mg/kg in diesel fuel. For analyses methods used in the petrochemical industry this means, in turn, that the detection limit should be a factor of 10 less than the required limits. Thus, conventional energy-dispersive X-ray fluorescence analysis, the cost-effective and user-friendly standard method for oil laboratories, will become obsolete.
The technologically advanced ED-XRF SPECTRO XEPOS, however, achieves the required sulfur detection limit of less than 1 mg/kg. The primary reason for this can be found in the proprietary polarized excitation radiation, which enables an almost complete suppression of the spectral background, increasing sensitivity by a factor of four versus conventional energy-dispersive X-ray fluorescence spectrometers. A high-resolution, peltier cooled, Si drift chamber is used as a detection system, eliminating the need for liquid nitrogen cooling.
Oxford Diffraction Limited Announce Collaboration with York Structural Biology Laboratory to Evaluate New Protein Crystallography X-ray Diffractometer
The York Structural Biology Laboratory (YSBL) and Oxford Diffraction Limited have today signed a heads of agreement to evaluate a new X-ray diffractometer, "Xcalibur PX Ultra", intended for protein crystallography.
The "Xcalibur PX Ultra" will be launched at the British Crystallographic Association meeting to be held at York in April 2003. The new product will represent a major advance in Protein Crystallography in the home laboratory due its high performance, coupled with a low capital cost, a negligible cost of ownership and low maintenance down-time. Xcalibur-PX Ultra is a complete system that combines the recently launched ONYX large area charge-coupled-device (CCD) detector with the brand new "Enhance Ultra" X-ray source. The Xcalibur platform comprises the well-proven four-circle kappa diffractometer, which allows greater flexibility in data collection leading to greater data completeness.
To expand our sales network we are looking for sales representatives worldwide.
Required knowledge and skills:
- profound basic knowledge of electric furnances and ovens;
- good knowledge of local market;
- experience in marketing;
- available office and warehouse.
UDK 142 - Automatic steam distilling unit connectable to an auto-titrator:
Steam distilling unit completely automatic for all the operative phases with high features of reliability and safety.
Useful for determinations of ammonia nitrogen, proteic nitrogen (Kjeldahl or direct alkaline distillation), nitric nitrogen (after reduction), phenols, volatile fatty acids, cyanides, sulphur dioxide, alcohol content, etc. in cereals, food and feed, water, soil, sludges, sediments and chemicals.
The patented steam generator using deionized water allows to perform fast distillations or very slow distillations in relation with the analyzed product,it permits to obtain 100 ml of distillate in only 3 minutes without any maintenance. An automatic device reduces the consumption of cooling water.
An innovative system permits the use of test tubes with different heights or Kjeldahl flasks up to 500 ml capacity.
A safety device warns about the lack of the test tube in position, the non closure of the front protection and the absence of the cooling water.
Easily connectable to various models of auto-titrators, the instrument allows to obtain the final result.
All parameters required for the distillation and titration are programmable.
The access to the 20 program menus, in 5 different languages, is very simple and intuitive.
It is also possible the connection to a keyboard.
The unit can be connected to a printer or a PC for printing or recording all the data related to a performed work according to GLP (Good Laboratory Practice).
Increased activities in application support
- Surface Science Contract Lab in U.S. to Better Serve the Needs of Growing Customer Base
- Surface science specialist adds to the strength of our rapidly expanding application laboratory in Hamburg, Germany
In order to better serve KRUSS customers' contract laboratory needs, KRUSS has a strategic alliance with company Augustine Scientific, Ohio, Dr. Christopher Rulison. Augustine Scientific exclusively uses KRUSS instrumentation for all surface tension and contact angle measurements. Dr. Rulison will operate in close partnership with KRUSS’ International facilities to provide the best data analysis for our customers as a precursor to, or in lieu of, instrumentation purchases.
To support the advancement of the field of surface science, Christine Bilke-Krause joined KRUSS in June 2002 as the head of our Hamburg, Germany application development laboratory. Mrs. Bilke-Krause brought to KRUSS more than a decade of surface science expertise gained while studying at Humboldt University of Berlin and the University of Leipzig as well as several years of corporate surface science experience.
In addition KRUSS continues to operate sales demonstration and application development laboratories in Charlotte, NC, and Palaiseau, France.
Adhesion Energy and Interfacial Tension – Two Related Coating/Substrate Interfacial Properties. Which is More Important for Your Application, and Why ?
The major reason for determining surface energies and surface polarities for coatings (including adhesives and inks) and substrates is as a basis for modification of either one or the other (or possibly both) to improve either wetting, spreading, or adhesion. Two important interfacial parameters are typically gained from such work: the physiochemical adhesion energy between the coating and the substrate, and the interfacial tension that remains, once the substrate/coating interface is formed. The former property (adhesion energy) has much to do with how favorable the formation of such a substrate/coating "bond" is. The later property (interfacial tension) has to do with how difficult such a bond will be to break, once it is formed.
Assessing the cleaning ability of aqueous surfactant solutions on soiled hydrophobic textile fabrics by using contact angle and surface tension measurements
This article presents a practical way of making an estimation based on surface tension measurements between dirt components and the cleaning solution as well as on contact angle measurements made on hydrophobic textiles; this makes it possible to predict the cleaning effect.
Contact Angle Measurements in Deepenings
Contact angle measurements in holes, bowls and wells were up to now not possible due to their specific geometry. With the new TDA10A, now the wetting properties of these samples can be characterised precisely. By using a new arrangement of the measurement system and the piezo dosing system these new applications were made possible.
Contact angle measurements in the wells of micro-titer plates can be performed as well as measurements on the concave side of contact lenses or on small areas of micro-mechanical devices.
NEW Weighing Dishes in Stock!
We are pleased to announce that we have two new weighing dishes available for our distributors. Both are constructed of rubberized polystyrene. We have blue versions of our standard square boats, as well as new hexagon shaped dishes. All are sold in packs of 500.
Part Number :: Description :: Suggested List :: Price Dealer Price
HS1421A :: Blue, square, 41x41x8mm :: $47.95 :: $5.95
HS1421B :: Blue, square, 89x89x25mm :: $69.95 :: $10.95
HS1421C :: Blue, square, 140x140x22mm :: $119.95 :: $19.95
HS14251A :: Hex, small :: $39.95 :: $4.49
HS14251B :: Hex, medium :: $49.95 :: $7.69
HS14251C :: Hex, large :: $89.95 :: $21.95
HS14251D :: Hex, X-large :: $99.95 / $26.95
The new weighing dishes will be pictured in our upcoming 28-page 2003 Dealer Catalog. The new catalog should arrive on your desk in early March.
Operation with titrators:
The DT1000 must be defined as a PT1000 temperature sensor in both setups of the DL5x and DL7x titrators.
DL7x: The default setting of the temperature option for DL7x titrators shipped after introduction of the DT1000 will be changed from PT100 to PT1000. However, operation of the DT1000 with DL7x titrators that are manufactured before the introduction require a change in the jumper settings on the temperature option from the former default setting of PT100 to PT1000. This procedure is described in detail in the DL7x operating instructions.
DL5x: The DL5x titrators are not affected by any hardware change, since the temperature sensor is simply defined in the setup.