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Basic identification colours and warning symbols identify the pipe contents and any hazards. [14] Pipe markers consists of 4 basic elements: Basic identification (background) colour, see table below, e.g. yellow for hazardous substance; Name of the substance/content, e.g. NATURAL GAS; Flow direction indicator arrows, ⇒; Warning symbols, e.g ...
Materials may react violently with water or form peroxides upon exposure to air (e.g., potassium, sodium). 1. Materials that are normally stable but can become unstable (self-react) at high temperatures and pressures. Materials may react non-violently with water or undergo hazardous polymerization in the absence of inhibitors (e.g., propene). 0.
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The earliest examples of color codes in use are for long-distance communication by use of flags, as in semaphore communication. [1] The United Kingdom adopted a color code scheme for such communication wherein red signified danger and white signified safety, with other colors having similar assignments of meaning.
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
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RAL Colours logo. RAL is a colour management system used in Europe that is created and administered by the German RAL gGmbH [] [1] (RAL non-profit LLC), which is a subsidiary of the German RAL Institute [].
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