strange question

[Yikes]

I had a residential apartment project a few years ago that was being constructed by one of the largest contractors in So Cal. The owner decided to put in CFL bulbs in the dining room fixtures, which were originally specified/purchased for incandescent bulbs. The contractor refused any CFLs to be allowed on the property until the building was complete / turned over, saying their insurance company would not allow them to handle CFLs due to the mercury - - if somebody broke a CFL, they would be required by their insurance company to call in a HAZMAT team for cleanup!

 

[cda]

FM William Burns

The four most common elements found inside a glass bulb post 1980's.

AND the ANSWER is::::::::::::?????????????????????

 

[FM William Burns]

Sorry completely forgot about this one!

As Maxwell Smart would ask........ would you believe : Air – Glycerin – Water and Food Coloring?



Ok........... would you believe:

Post 1980 manufacturers sought a fast-acting head and tried new bulb designs and new chemicals including: Trichloromethane and tetrachloroethylene (perchloroethylene).

However, to truly compete with the more temperature specific activation ranges of fusable metals, the industry developed mixtures of liquids to allow bulbs to activate at more specific temperature ranges. These chemicals are:

One halogen derivative of an aromatic hydrocarbon containing two or more halogen substituents such as 1,3-dichlorobenzene, or an aliphatic amide such a formamide.

Use of these liquids enables a wide range of operating temperatures and a quick response operating time to be achieved.

BTW the later is the best answer I received to date.