What is the difference between E17 and ED17 bulbs?

E17 is the base size (intermediate), a little smaller than the standard E26. ED17 is the shape of the bulb. This bulb is a medium base (E26). 1 of 1 found this helpful.

What is the difference between E39 and EX39?

Q: What is the difference between E39 and EX39 base? A: A lamp equipped with an EX39 base has a longer tip at the screw base. It can operate with both standard E39 and Protected EX39 lamp holders. A lamp with a E39 base will only operate on a E39 lamp holder but will not operate on a EX39 lamp holder.

What’s the difference between high pressure sodium and metal halide?

The primary visual difference between them is that metal halide light is white and the light emitted from a High Pressure Sodium bulb is amber orange. Both metal halide bulbs and HPS bulbs are available in medium and mogul base screw in connections.

What’s the difference between metal halide and mercury vapor?

Mercury Vapor (MV) lamps are most frequently used outside for parking and security lighting. Metal Halide (MH) lamps provide the best color rendering of all HID lamps; color rendition is almost as full spectrum incandescents.

Is E39 a base standard?

bulbs have larger screw bases (E39) than the standard, medium (E26) screw base bulbs.

What does EX39 mean?

Metal Halide. Lamps. E39 Base. The EX39 base has an extended center terminal that can reach the center contact of an EX39 socket.

Should I use MH or HPS for veg?

While either type can be used for the full growing cycle, when combined, using an MH grow light for vegetative growth and flowering under an HPS grow light is the most recommended HID grow light setup because utilizing the strengths of both types at the right times produces the best results.

What color is high pressure?

High pressure is colored in blue. The choice of the color blue has nothing to do with temperature. High pressures can bring with warm or cold weather depending on the type of high pressure it is. Low Pressure System: This is a region of relatively lower pressure.

What color is a mercury vapor light?

Sodium vapor and mercury vapor lamps emit yellow and bright blue light, respectively. They are very efficient, and provide high-intensity light suitable for illuminating large, open areas.