Dosimeter Badge Reference Guide by Daniela Nicoletti, Dosimetry Coordinator


Radioactive waste mis-management by Lauren Kelly – Hazardous Materials Program

Recently, while completing regular waste pick-up rounds, an EH&S team member was splashed with an unknown liquid that was inappropriately discarded in a 1 gallon “sharps” container. It was later determined the liquid contained 0.04 microcuries of 35S, a radioactive isotope. Thankfully, the safety professional was wearing appropriate personal protective equipment (including a coat, gloves and safety glasses) so that exposed skin covered preventing bodily contamination.

To prevent future occurrences and avoid unnecessary injuries to you, your colleagues and EH&S personnel who handle your waste, always wear appropriate personal protective equipment when working with or around hazardous materials … and always manage laboratory waste in accordance with University policies for radioactive, chemical and regulated medical wastes … Proper waste management includes using only an appropriate collection container for your laboratory’s wastes, and labeling all waste collection containers appropriately with the contents (including the chemical name).

Columbia University EH&S has joined Twitter!twitter
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on all matters related to health and safety both within and outside of the organization, EH&S is happy to announce the
launch of our official Department twitter account. Following us is easy: you can follow our account (@ColumbiaEHS)
from Twitter or through the easy access link on our home page at

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