the extra weight of just one litre of hydrogen at standard temperature and force. Corresponding to more or less 0.09 grms.
The unit for estimating the weight of aëriform substances; -- the weight of a liter of hydrogen at 0° centigrade, and with a tension of 76 centimeters of mercury. It is 0.0896 of a gram, or 1.38274 grains.
The size of 1,000 cubic centimeters (and/or theoretical liter) of hydrogen at standard pressure and heat.
the extra weight of a liter of hydrogen (at 0 centigrade and 760 millimeters force)