Definitions for crith
the weight of a liter of hydrogen (at 0 centigrade and 760 millimeters pressure)
the weight of 1 litre of hydrogen at standard temperature and pressure. Equal to approximately 0.09 grams.
Origin: From κριθή
the unit for estimating the weight of a/riform 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 Standard Electrical Dictionary
The weight of a litre of hydrogen at 0º C. (32º F.), and 760 mm. (30 inches) barometric pressure. It is .0896 grams. The molecular weight of any gas divided by 2 and multiplied by the value of the crith, gives the weight of a litre of the gas in question. Thus a litre of electrolytic gas, a mixture of two molecules of hydrogen for one of oxygen, with a mean molecular weight of 12, weighs (12/2) * .0896 or .5376 gram.