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Sample Holder Articles & Analysis
13 articles found
Pay special attention to whether the sample holder sealing ring has hardened and cracked. When replacing the O-ring, apply an appropriate amount of vacuum grease to enhance the sealing performance. ...
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is a powerful analytical technique for the study of powdered and rough surface materials. It is widely employed for quality control, materials characterisation and catalytic studies in both research and industrial settings. However, optimal sample preparation and instrument setup are crucial to obtain the most reliable results ...
BySpecac
Check for inner filter effect.What to do if the Fluorescence Emission is too lowIf the fluorescence emission is too low, check the alignment of the sample by the visual inspection of where the beam hits the sample. This is important especially for solid samples (see figure above). Some sample holders allow ...
In highly concentrated solutions the excitation beam is attenuated by the sample so that only the surface facing the excitation beam fluoresces strongly. ...
Resorting to SEM analysis imposes constraints on how the samples must be presented for analysis in the microscope. For example, the scanning electron beam in the SEM traverses only a small distance, and samples to be analyzed must be mounted on a holder that is usually smaller than an inch in diameter. ...
It is a standard scanning electron microscope sample holder that has a collection substrate platform of 0.5 inch dia. ...
In addition to the above, scientists have also used with great success our Microanalysis Particle Samplers, also multistage inertial impactors, to collect size-segregated particle samples for microanalysis in a scanning electron microscope (SEM). This instrument has the unique feature of using a standard scanning electron microscope (SEM) sampler holder in each ...
H2O – two simple elements, oxygen (O) and hydrogen (H), fuse together to form one of the most important molecules in the world: water. Water is everywhere on Earth and it is vital for our health and survival. It often contains other ions like calcium, magnesium, and chloride which are essential for the human body to function. However, in specific situations, ...
Check whether the various components in the test chamberare damaged or the wiring is off, whether the sample holder has a certain load-bearing capacity, and whether it is welded by high-quality stainless steel. ...
To get straight down to business you simply load your sample, press the green START button, and your analysis will appear in seconds. ...
Infrared spectroscopy uses an Infrared radiation source, a sample holder, a detector, and a computer to study the interaction of matter and light. ...
The carbon steel showed visible signs of corrosion (b). Duplicate samples were prepared for each material and radionuclide. Coupon Coating Application and Removal After initial counts were taken, the coupons were coated with the Decon 1101 Gel. ...
Procedure: Air samples are collected by drawing workplace air, using personal sampling pumps, through 37-mm mixed cellulose ester (MCE) filters mounted in polystyrene cassettes. Samples are prepared for XRF analyses by transferring each filter, along with the support pad, to a special air filter sample holder, ...