Faucet-mounted eyewashes are handy when space is tight or plumbing is not easily accesible. They attach directly to your existing faucet. However, this ease of installation and relatively low expense have a serious drawback. Specifically, they require two motions to operate (turn on water, pull knob to activate eyewash flow).
Therefore, neither Safety Emporium nor the manufacture, Guardian Equipment, believes that these units meet the provisions of ANSI Z358.1-2014 as eyewash units. These units are intended solely as supplemental units in addition to dedicated, plumbed eyewash equipment installed in the workplace.
Faucet-mounted eyewashes should be used with cold or warm water only. Use of hot water might cause scalding.