Domestic LPG gas cylinders are painted red for safety and high visibility.
The red colour is internationally recognized as danger colour ensuring it is easily spotted and handled with care.
As red has the longest wavelength in visual light spectrum, it makes it easily noticeable even from distance, in low light also.
Red colour alerts the people to the highly inflammable nature of LPG.
Red colour distinguishes domestic cylinders from other types such as blue which is the colour of commercial gas cylinder.
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