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    In an organic chemistry laboratory, during a practical work, from 9 to 13 h, has shown that there is a consumption of about 3 litres of 2-butanone (methylethylketone). Since there is a waste management program and the presence of this product is not detected, it is assumed that consumption of this amount is due to evaporation. Calculate the flow rate of ventilation required to maintain the 2-butanone concentration in air below the OEL value (200 ppm) during the practical work. The laboratory ha

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    A 22inch exhaust fan with 5 blades turning at 2850 rpm's.

    This Longines lot 122 of the January Fine and Decorative Arts Auction by Quinn's Auctions Galleries on link Friday January 24th 2025 at 10 am link ET. The high bid at the time of publication is 900. Click link here to view the lot.



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