Page 117 - Freshwater-Biology-and-Ecology-Handbook
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Figure 2.19
                                         Two designs of fume extractors for sorting invertebrate samples. Both
                                        designs take fumes away from the analyst towards the back of the tray.






                Caution
                Be aware of the health risks from poor posture and inadequate lighting. When spending protracted
                periods sorting and identifying invertebrate samples, pay attention to your chair and its height
                in relation to the laboratory bench. Take frequent breaks to exercise when sorting or identifying
                samples. Wash samples carefully because surface waters can be polluted and pose a risk to staff.









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