NEW ARTICLE !!! DUCTLESS FILTERING FUME ENCLOSURE OR DUCTED FUME HOOD? Advice and analysis for making an impartial decision. Truthfully, it is quite impossible to give an answer in favor of either concept without objectively analysing the disadvantages and advantages of both systems. The goal of this article is to eliminate any preconceived negative notions against one system or the other so as to allow users to find the best solution in terms of cost and adaptability of use, without loosing sight of the fact that the solution retained should ultimately insure their safety. Read more...   DUCTLESS FUME HOODS 30 YEARS LATER. By strictly examining known facts about the existing 30-year-old ductless fume hood market, this article raises the issue of whether or not ductless filtering fume hoods should be recommended. Since very few articles or guidelines are available on this subject, confusion lingers on. As a result, many purchase products even though they should not while others, who could use this alternate protection method, do nothing. Read more...   CAN WE RECOMMEND THE USE OF A DUCTLESS FUME HOOD? This question must be asked because many previous authors of such articles have written against using a "DFH ( Ductless Fume Hood )" and in some cases some have banned them entirely while many users are satisfied with the performance that their DFH has brought them for over 30 years. Read more...   ABOUT THIS SITE Many previous authors of articles relating to laboratory safety have written against using a "DFH (Ductless Fume Hood)" and in some cases some have banned them entirely. There exists a real interest for the user to consider a solution that provides the countless economic advantages proclaimed by all manufacturers, such as: no complicated ducting, complete mobility, no consumption of air and energy, no exterior pollution. These arguments are enough to convince users to the point where they will make a purchase! In front of such arguments, many users have let themselves be convinced and have been disappointed with the results, which in turn has initiated the negative comments made by some authors on this subject. See article : "Ductless fume hoods 30 years later?" for more information