quantitative analysis. In addition, NA 2500 is equipped with an electronic mass flow control of carrier gas providing greater stability of the analytical conditions thus ensuring a long term reproducibility.
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NA 2500, based on the well known dynamic
flash combustion process, analyzes N, NC, and NCS in a large
array of different samples. A simple analytical layout ensures
that all the gases generated by the high combustion temperature
are carried to a GC system and measured by a thermal conductivity
detector for a true, quantitative analysis. In addition, NA 2500 is equipped with an electronic mass flow control of carrier gas providing greater stability of the analytical conditions thus ensuring a long term reproducibility. |
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- 160 to 800 nm at more than 40% of the emission spectrum. - 19 PMT detector array, 25 elements to <1 pbb detection limit for most elements. - Typically less than 0.2% RSD replicate error for Mg/Ca and Sr/Ca. - 108- 3ml vial Autosampler AS421 - Download boilerplate text for Proposals |
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Hardware Features: - High resolution, Y/C color CCD video camera for on-axis sample viewing and digitizing. - On-line (second camera) real-time mill monitor. - Continuously adjustable, parfocal, video zoom; 25X to 140X magnification (higher magnification quoted upon request) - Continuously adjustable stereo microscope viewing; 7X to 40X magnification - Fine resolution (0.16 micron) automated 2" travel XYZ. - Flood illumination and transmitted illumination - Polarizer / analyzer - 360-degree rotation of sample mount. - High precision, low eccentricity, high torque DC milling chuck with adjustable speed - Carbide tipped milling tools for high-resolution micromilling; 0.008" bit. - Pentium computer with 17 inch flat panel LCD monitor. |
Software Features: - On screen digitization of sample. Full function software with point & mill control functions - Sample map navigation. - Software control of drill speed (RPM and traverse speed) - Trace contour tracking tool with powder collection cycle. - Raster (adjacent trace lines) pattern tool with powder collection cycle. - Computer routine for interpolation of sub-sampling paths. - Off-line digitized file import function with software transformation of image coordinates. - Precise depth control over entire area of sampling (Z-axis tilt correction) - On screen display of digitized and interpolated sampling paths - Data record file with sample path |
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SediGraph 5100 Particle Size Analysis SystemThe SediGraph 5100 determines particle size by the highly accurate and reproducible sedimentation method which measures the gravity-induced settling rates of different size particles in a liquid with known properties. The rate at which particles fall through the liquid is described by Stokes' Law. The largest particles fall fastest, while the smallest particles fall slowest, until all have settled and the liquid is clear. Since particles rarely exhibit uniform shapes, each particle size is reported as an "Equivalent Spherical diameter", the diameter of a sphere of the same material with the same speed of sedimentation. |