from the back of my head:

1 inch is 2.54 cm

1 LB is 453 grams

1 gram is 1000 miligrams (mg)

1 litre is 1000 cubic cm

well.... & some general stuff:

1 litre is the volume of one kilogram of fresh water,

it is a cube of 10x10x10 centimeters.

so, one gram is one cubic centimeter of fresh water.

well...I think it's at sea level on a certain temp' so you have to travel to the beach to measure it. another good way is to use the calculator 8-) .

pretty easy to calculate.

Erez

: wood dust combustion....minimum temperatures are about 842 F. I don't know
: what kind of concentration levels there would be in ppm, and if you did
: know would you be able to recognize it in the shop? My info was from a
: metric source, and I've no way to substantiate their data, but they stated
: the combustible concentration level at 20mg/litre. This sounds like it
: would be approachable in a home shop environment, but then it is hard to
: say what 20mg/litre would look like in the shop (I wouldn't know
: 20mg/litre, if it reached out and slapped me). With your ventilation, I