Examples of devices that accept both 802.3af and Cisco power: Examples of devices that only accept 802.3af power: The presence of a gigabit Ethernet port on a powered device is a clear indicator that the device is 802.3af only. Because of the relative newness of PoE+, few devices require this level of power.
BHT or butyl hydroxytoluene is a fat soluble synthetic compound which is commonly used to preserve foods and cosmetics to slow down the autoxidation rate of ingredients in a product that can cause changes in the taste or colour.
Phenolphthalein is used in titrations mostly to indicate the pH of the solution. If acidic solutions are added with this chemical they become colorless. If the acidic solutions are already colorless, they remain colorless after its addition too.Strong acidic solutions appear in orange color with phenolphthalein.The basic solutions appear pink in color.If the concentration of phenolphthalein in solution is more, then it can give purple color to the basic solutions. The pink color of this indicator in basic solutions gradually fades away and the solution becomes colorless after sometime.Phenolphthalein is not soluble in water and hence the solution of it is generally prepared using alcohol. Phenolphthalein solution is itself a weak acid and loses hydrogen ion in the solution.he pink color of this indicator in basic solutions gradually fades away and the solution becomes colorless after sometime. Phenolphthalein is not soluble in water and hence the solution of it is generally prepared using alcohol. Phenolphthalein solution is itself a weak acid and loses hydrogen ion in the solution.