All rights reserved. Copyright (c) 1996-2019 Adv. Inventive ways of accessing items beyond the reach of the gloves exist, such as the use of tongs and strings. The gloveboxes are thus only used for the most air-sensitive stages in an experiment. ELIXIR - European research infrastructure for biological information. About Our Coalition. HEPA filters have the ability to save 50 to 60 percent of your energy costs while reducing your equipment costs and helping you realize a payback in as little as 12 months. The standard curve is not linear and the precise absorbance varies depending on the age of the assay reagent. 28 2565! (reprint at Norwegian University of Science and Technology), "The Integrated Synthesis Course: Schlenk Technique", "AL-134: Handling and Storage of Air-Sensitive Reagents", https://en.wikipedia.org/w/index.php?title=Air-free_technique&oldid=1115325836, Articles with dead external links from October 2016, Articles with permanently dead external links, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 10 October 2022, at 22:35. NONE [6][7], Distillation stills are fire hazards and are increasingly being replaced by alternative solvent-drying systems. Although traditional drying techniques involve distillation from an aggressive desiccant, molecular sieves are far superior. Maltose standard (Sigma-Aldrich, cat. Call +800 0000 1952; Email contact@givenchy.com Enhancements and modifications of primer design program Primer3. Or mark the, E.g. Reactions are thereafter carried out using Schlenk techniques. Drying of solids can be brought about by storing the solid over a drying agent such as phosphorus pentoxide (P2O5) or silica gel, storing in a drying oven/vacuum-drying oven, heating under a high vacuum or in a drying pistol, or to remove trace amounts of water, simply storing the solid in a glove box that has a dry atmosphere. Where air-free requirements are not stringent, other techniques can be used. 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