Ultra Flash III/iLOK® 12g Ultra Pure IR silica gel 40-63µm

The Ultra Flash Silica flash cartridge is packed with unmodified high‑purity silica and operates as a normal phase. This is the most commonly used packing for flash chromatography because most intermediates and final products of an organic synthesis are present in such solvents and can be ordered by their polarity. The high purity of the silica matters because metal traces and acidic sites can decompose sensitive products on the cartridge. The cartridge is offered across all three product lines of the brand and across the full range of bed masses.

Features and Benefits

• Pre-packed cartridges for flash separation
• Irregularly shaped silica gel
• Reverse-phase for aqueous mixtures
• Multiple fill volumes for each separation task

Additional Notes

Ultra Flash encompasses UCT’s flash cartridges. Flash chromatography falls between open-column chromatography and preparative HPLC, as it uses coarse particles, low pressure, and short run times, thereby separating quantities in the gram range. Therefore, when purifying a crude product from a synthesis, the cartridge is selected not based on length and diameter, but on the filling capacity, which is determined by the amount of substance to be loaded. The same chemistry is available across the entire range from a few grams to over one kilogram, allowing a separation developed on a small scale to be scaled up to a larger scale without changing the material. The series is divided into three model lines, which differ in their cartridge housings and connections and can be identified by their part numbers. Two factors determine which model is suitable: the connection of the existing Flash system and the maximum amount of substance to be processed. Ultra Flash I is the only model that also covers the range above three hundred grams and extends into the kilogram range, making it the choice for large batches. Ultra Flash II covers the range up to three hundred grams. Ultra Flash III, with an iLOK connection, covers the same range but offers the finest gradation of filling volumes, allowing for the most precise adjustment to the sample quantity. This series also includes an empty cartridge into which a poorly soluble sample can be loaded as a solid before it is fed into the separation column.

Legal Information

Ultra Flash is a trademark of UCT, Inc., Bristol, Pennsylvania. The product and phase names mentioned are part of the manufacturer's chromatography portfolio.