Catálogo General de Material para Laboratorio

11 KNOWLEDGE Conversion factors for units of pressure 1 ) at 20 °C Pa bar mbar atm (760 Torr) at (kp/cm 2 ) Torr (mm Hg) 1 ) mWS 1 ) 1 Pa 1 10 -5 10 -2 0,9869 · 10 -5 1,0197 · 10 -5 7,528 · 10 -3 1,022 · 10 -4 1 bar 10 5 1 10 3 0,9869 1,0197 7,528 · 10 2 10,22 1 mbar 10 2 10 -3 1 0,9869 · 10 -3 1,0197 · 10 -3 0,7528 1,022 · 10 -2 1 atm 1,0133 · 10 5 1,0133 1,0133 · 10 3 1 1,0332 7,628 · 10 2 10,35 1 at (kp/cm 2 ) 0,9807 · 10 5 0,9807 0,9807 · 10 3 0,9678 1 7,382 · 10 2 10,02 1 Torr (mm Hg) 1,3332 · 10 2 1,3332 · 10 3 1,3332 1,316 · 10 -3 1,359 · 10 -3 1,0036 1,362 · 10 -2 1 mWS 9,790 · 10 3 9,790 · 10 -2 97,90 9,661 · 10 -2 9,982 · 10 -2 73,85 1 Conversion of English to metric units Quantity Unit Symbol Conversion Comments length mil inch foot yard mile in ft yd mi 1 mil = 25,40 µm 1 in = 2,54 cm 1 ft = 0,305 m 1 yd = 0,914 m 1 mi = 1,609 km applies only in USA equals inch (") area square inch square foot square yard square mile in 2 ft 2 yd 2 mi 2 1 in 2 = 6,452 cm 2 1 ft 2 = 9,290 dm 3 1 yd 2 = 0,836 m 2 1 mi 2 = 2,590 km 2 volume cubic inch cubic foot cubic yard in 3 ft 3 yd 1 in 3 = 16,39 cm 3 1 ft 3 = 28,31 dm 3 1 yd 3 = 0,765 m 3 volume (capacity for liquids) minim minim fluid oune fluid oune liquid pint liquid pint liquid quart liquid quart gallon gallon barrel ozfl ozfl pt pt qt qt gal gal 1 minim = 59,19 mm 3 1 minim = 61,61 mm 3 1 ozfl = 28,41 cm 3 1 ozfl = 29,57 cm 3 1 pt = 568,30 cm 3 1 pt = 473,20 cm 3 1 qt = 1,136 dm 3 1 qt = 946,40 cm 3 1 gal = 4,546 dm 3 1 gal = 3,785 dm 3 1 barrel = 159,00 dm 3 applies for GB applies for USA applies for GB applies for USA applies for GB applies for USA applies for GB applies for USA applies for GB applies for USA only for mineral oil volume (capacity for dry substances) dry pint dry quart dry barrel 1 dry pint = 550,6 cm 3 1 dry quart = 1,101 dm 3 1 dry barrel = 115,6 dm 3 applies only in USA applies only in USA applies only in USA mass (weight) grain dram ounce pound quarter cental (long) hundredweight short hundredweight (long) ton short ton gr dr oz lb qr ctl cwt sh cwt tnl tnsh 1 gr = 64,80 mg 1 dr = 1,772 g 1 oz = 28,35 g 1 lb = 453,60 g 1 qr = 12,70 kg 1 ctl = 45,36 kg 1 cwt = 50,80 kg 1 sh cwt = 45,36 kg 1 tnl = 1016,00 kg 1 tnsh = 907,20 kg applies only in GB applies only in GB applies only in GB applies only in USA applies only in GB mass (troy system) pennyweight troy ounce troy ounce dwt oz tr oz t 1 dwt = 1,555 g 1 oz tr = 31,10 g 1 oz t = 31,10 g applies for precious stones + metals applies for GB applies for USA density pound/cubic foot pound/cubic inch pound/cubic yard lb/ft 2 lb/in 2 lb/yd 2 1 lb/ft 2 = 0,016 g/cm 3 1 lb/in 2 = 27,68 g/cm 3 1 lb/yd 2 = 0,593 kg/m 3 pressure pound/square inch (p.s.i.) pound/square foot inch Hg inch WS lb/in 2 lb/ft 2 in Hg in WS 1 lb/in 2 = 6,895 · 10 -2 bar (1 p.s.i. = 6,895 · 10 -2 bar) 1 lb/ft 2 = 4,788 · 10 -4 bar 1 in Hg = 3,337 · 10 -2 bar 1 in WS = 2,487 · 10 -3 bar