Peter P. wrote:

> mercury total, approx (incl bubble):
> 
>   0.1mm dia, 25mm long -> 0.196 mm^3 ~> 200 nl

About a third of the volume of a 1608 (0603) resistor. 
About 2.6 mg mercury -- less than in most CFLs (4...8 mg). 

Gerhard

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