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Difference Between MH and HPS

mh_buld_amMH vs HPS

MH, or Metal Halide, and HPS, or High Pressure Sodium, are two types of High Intensity Discharge lights that give a brighter effect, and also help to save energy. Both the MH and the HPS are widely used for outdoor lighting. Well, both these lights have specific characteristics that differentiate one from the other.

The first difference that can be seen between Metal Halide and High Pressure Sodium lights, is their colour and the quality of the light produced. While the MH bulbs produce a blue-white colour, HPS bulbs produce amber white lights.

Another difference that can be seen between MH and HPS lamps, is their lumen. Even with the same electricity, MH produces less rated lumens than the HPS lamps.

Another thing that can be seen is, that in some lumens, the Metal Halide’s blue-white produces more sky glow than the HPS’ amber-white colour. Unlike HPS lamps, the MH has about 78 per cent to 95 per cent initial efficiency.

Well, it can also be seen that the Metal Halide lamps produce more light than that of the High pressure Sodium lamps. It has been found that MH lamps are four to five times more efficient than HPS lamps.

When considering their light generation, the HPS lamps produce light through the excitation of sodium. On the other hand, the MH lamps produce light through the excitation of two to five different chemicals.

MH lamps last for more days than HPS lamps. For example, you will have to change the MH bulbs once in six to 12 months if it is used continuously for 18 hours a day, but, in the case of HPS bulbs, the replacement is needed once in six or 12 months if the bulb is used continuously for 12 hours a day.

Well, the HPS lamps are also used if there is a need for natural light. HPS lamps are good for places that do not have enough light, or for places that look grey. If there is no natural light, MH lamps are a good choice to use.

Last of all, when comparing the prices, the MH lamps are more expensive than HPS lamps.

Summary:

1. The MH bulbs produce blue-white colour; HPS bulbs produce amber white lights.

2. The MH lamps are more expensive than HPS lamps.

3. The MH lamps last for more days than HPS lamps.


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