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Biohazard Level 1: Bacteria and viruses including Bacillus subtilis, canine hepatitis, Escherichia coli, and varicella , as well as some cell cultures and non-infectious bacteria. At this level precautions against the biohazardous materials in question are minimal, most likely involving gloves and some sort of facial protection.
The Biohazard Symbol with dimensions. All parts of the biohazard sign can be drawn with a compass and straightedge. The basic outline of the symbol is a plain trefoil, which is three circles overlapping each other equally like in a triple Venn diagram with the overlapping parts erased.
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The symbol for biohazard substances (without the black-yellow triangle.) Date: 20 May 2008: Source: Modified from Image:Biohazard symbol.svg: Author: Original by Silsor; Colour change by Lokal_Profil; Permission (Reusing this file) Same as original
English: Hazard symbol for WHMIS Class D-3 hazardous material: biohazardous infectious material Français : Système d'information sur les matières dangereuses utilisées au travail (SIMDUT), Catégorie D - Matières toxiques et infectieuses, 3.
The international biohazard warning symbol as it appears in the Laboratory biosafety manual (Third edition) by the World Health Organization, Geneva 2004. Note that the sickles have blunt ends, not sharp ones. (Unlike most versions on the web) Blunt probably because sharp forms tend to print lousy images when stenciled.
The GHS transport pictograms are the same as those recommended in the UN Recommendations on the Transport of Dangerous Goods, widely implemented in national regulations such as the U.S. Federal Hazardous Materials Transportation Act (49 U.S.C. 5101–5128) and D.O.T. regulations at 49 C.F.R. 100–185.
Description: The symbol for biohazard substances (without the black-yellow triangle.) Source: old version of Image:Biohazard symbol.svg; Author: Silsor; Other versions: Date: 29 April 2006 (original upload date) Source: No machine-readable source provided. Own work assumed (based on copyright claims). Author: No machine-readable author provided.