KBr pellets are commonly used in infrared (IR) spectroscopy as a carrier for the sample being analyzed. KBr is optically transparent to light in the IR range, which allows for accurate measurement of the sample's absorbance without interference. The transmittance of KBr in the range of wave numbers used in IR spectroscopy is 100%.
In addition to spectroscopic applications, KBr pellets are also used in laboratories engaged in pharmaceutical, biological, nutrition, and spectrographic operations. The KBr Pellet Press is a device used to fabricate pellets for analysis in an emission spectrometer. It is a compact, hand-operated press that can be used anywhere in the laboratory, requiring minimal bench space and no fixed mounting. The press produces uniform pellets in a polished die and ejects them smoothly into a receiver without contamination.
The KBr pellets produced by the press are cylindrical in shape with flat ends. The height or thickness of the pellets depends on the amount of material compressed and the force applied. The dies used in the press automatically align with the press ram and can be easily switched out for reloading.
To make KBr pellets, it is important to follow a few simple rules. First, heat the anvils and the body of the die set before making the pellet to ensure they are as dry as possible. Second, use dry KBr powder. Third, ensure that the anvils, die set, and powder are all at the same temperature. Hot powder and cold anvils can result in a cloudy, wet pellet. It is recommended to heat the KBr powder in a dry environment and store it in a heated case or desiccator to keep it dry. If keeping the KBr powder dry is a challenge, grinding your own powder from random cuttings of KBr can be an alternative, and a Wig-L-Bug mill can simplify the process.
When preparing the pellets, it is important to thoroughly blend the sample with the KBr powder to ensure accurate spectra can be obtained. This blending can be done using a mortar and pestle or a grinding mill. The overall quality of the pellet is highly dependent on the quality of the KBr or halide salt powder used, which should always be of spectroscopic grade purity.
Possible faults in the pellet preparation process include using insufficient KBr or sample quantity, not properly blending the sample with the KBr powder, using low-quality KBr powder, or not properly heating the anvils and die set. These faults can result in a pellet with reduced clarity or inaccurate spectra.
Looking for a reliable and efficient way to fabricate KBr pellets for your spectroscopy analysis? Look no further than KinteK's KBr Pellet Press! Our compact and hand-operated device produces uniform cylindrical pellets with flat ends, ensuring accurate measurements without interference in absorbance. With our easy-to-use press, you can create high-quality KBr pellets by following simple steps like heating the anvils and die set, using dry KBr powder, and ensuring all components are at the same temperature. Upgrade your lab equipment and achieve precise results with KinteK's KBr Pellet Press. Contact us today!
