be cartridges of the cleansing type used for separating harmful substances.
It is of vital importance, especially in the case of high-pressure type compressors used for filling respirator bottles with air, that the adsorption cartridges be replaced in due time, because a deteriorated filter cartridge is not effective in filtering out the harmful substances from the pressurized air. With systems of the known type, replacement of the adsorption cartridge takes place after a certain operating period specified by the manufacturer. In order to be on the safe side, the life of such an adsorption cartridge specified by the manufacturer is determined on the basis of the most unfavorable operating conditions. The disadvantage of this procedure is that in many instances the adsorption cartridges are replaced long before the endFernando Torres and Chelsea became the first club to be bounced from the Champions League group stage a season after winning the title. Marc Atkins/Icon SMI

Juan Mata made what seemed a pointed remark in an interview with French magazine So Foot that was published last week. During a chat about eating fish and chips (he's not a fan) and his favorite author (Charles Bukowski, whose "Ham and Rye" is the first book the Spaniard is trying to read in English), Mata was asked about friend Fernando Torres.

"When someone pays £50 million for you, and you become the most expensive striker in the Premier League, obviously you want to do well," Mata said. "But too much so, perhaps, and especially him, because Torres is someone who knows where he