AREOM′ETER

(ă-reor ăr-re-; āre-e—Smart). Syn. Areom′etrum , L.; Aréomètre , Fr. Literally, a ‘measure of lightne ’ or ‘rarity,’ originally applied to any instrument for determining the specific gravity of alcoholic and ethereal liquids; but since applied, like the word ‘hydrometer,’ to instruments adjusted to the densities of all liquids. In this country the term is principally confined to the aréomètres of Baumé, on account of their general use by Continental chemists. The relations and equivalents of Baumé’s scales, as now adopted in France, are shown in the first two of the following Tables :— I.— Corresponding DEGREES of Baumé’s Areometers and REAL SPECIFIC GRAVITIES :— 1. Areometer for liquids LIGHTER than WATER , or Pèse-esprit . [77] | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | | 10 | 1·0000 | 21 | 0·9300 | 32 | 0·8690 | 42 | 0·8202 | 52 | 0·7766 | | 11 | 0·9932 | 22 | 0·9241 | 33 | 0·8639 | 43 | 0·8156 | 53 | 0·7725 | | 12 | 0·9865 | 23 | 0·9183 | 34 | 0·8588 | 44 | 0·8111 | 54 | 0·7684 | | 13 | 0·9799 | 24 | 0·9125 | 35 | 0·8538 | 45 | 0·8066 | 55 | 0·7643 | | 14 | 0·9733 | 25 | 0·9068 | 36 | 0·8488 | 46 | 0·8022 | 56 | 0·7604 | | 15 | 0·9669 | 26 | 0·9012 | 37 | 0·8439 | 47 | 0·7978 | 57 | 0·7556 | | 16 | 0·9605 | 27 | 0·8957 | 38 | 0·8391 | 48 | 0·7935 | 58 | 0·7526 | | 17 | 0·9542 | 28 | 0·8902 | 39 | 0·8343 | 49 | 0·7892 | 59 | 0·7487 | | 18 | 0·9480 | 29 | 0·8848 | 40 | 0·8295 | 50 | 0·7849 | 60 | 0·7449 | | 19 | 0·9420 | 30 | 0·8795 | 41 | 0·8249 | 51 | 0·7807 | 61 | 0·7411 | | 20 | 0·9359 | 31 | 0·8742 | [77] These instruments were originally adjusted at the temperature of 12 1 ⁄ 2 ° Cent., or 54 1 ⁄ 2 ° Fahr. Those now made in France are adjusted at 15° C., or 59° F.; and those made in England, at either 59° or (more usually) 60° Fahr. The standard temperature of the instrument must be known for its correct application. 2. Areometer for liquids HEAVIER than WATER ; Pèse-acide , or Pèse-sirop .[78] | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | | 0 | 1·0000 | 16 | 1·1176 | 32 | 1·2667 | 47 | 1·4476 | 62 | 1·6889 | | 1 | 1·0066 | 17 | 1·1259 | 33 | 1·2773 | 48 | 1·4615 | 63 | 1·7079 | | 2 | 1·0133 | 18 | 1·1343 | 34 | 1·2881 | 49 | 1·4758 | 64 | 1·7273 | | 3 | 1·0201 | 19 | 1·1428 | 35 | 1·2992 | 50 | 1·4902 | 65 | 1·7471 | | 4 | 1·0270 | 20 | 1·1515 | 36 | 1·3103 | 51 | 1·5051 | 66 | 1·7674 | | 5 | 1·0340 | 21 | 1·1603 | 37 | 1·3217 | 52 | 1·5200 | 67 | 1·7882 | | 6 | 1·0411 | 22 | 1·1692 | 38 | 1·3333 | 53 | 1·5353 | 68 | 1·8095 | | 7 | 1·0483 | 23 | 1·1783 | 39 | 1·3451 | 54 | 1·5510 | 69 | 1·8313 | | 8 | 1·0556 | 24 | 1·1875 | 40 | 1·3571 | 55 | 1·5671 | 70 | 1·8537 | | 9 | 1·0630 | 25 | 1·1968 | 41 | 1·3694 | 56 | 1·5833 | 71 | 1·8765 | | 10 | 1·0704 | 26 | 1·2063 | 42 | 1·3818 | 57 | 1·6000 | 72 | 1·9000 | | 11 | 1·0780 | 27 | 1·2160 | 43 | 1·3945 | 58 | 1·6170 | 73 | 1·9241 | | 12 | 1·0857 | 28 | 1·2258 | 44 | 1·4074 | 59 | 1·6344 | 74 | 1·9487 | | 13 | 1·0935 | 29 | 1·2358 | 45 | 1·4206 | 60 | 1·6522 | 75 | 1·9740 | | 14 | 1·1014 | 30 | 1·2459 | 46 | 1·4339 | 61 | 1·6705 | 76 | 2·0000 | | 15 | 1·1095 | 31 | 1·2562 | II.— Corresponding SPECIFIC GRAVITIES and DEGREES of Baumé’s Areometer for heavy liquids . [78] From the Batavian Pharma copœia. [78] See footnote on previous page. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | Degrees Baumé. | Specific Gravity. | | 0 | 1000 | 16 | 1125 | 32 | 1286 | 47 | 1485 | 62 | 1758 | | 1 | 1007 | 17 | 1134 | 33 | 1298 | 48 | 1501 | 63 | 1779 | | 2 | 1014 | 18 | 1143 | 34 | 1309 | 49 | 1516 | 64 | 1801 | | 3 | 1022 | 19 | 1152 | 35 | 1321 | 50 | 1532 | 65 | 1823 | | 4 | 1029 | 20 | 1161 | 36 | 1334 | 51 | 1549 | 66 | 1847 | | 5 | 1036 | 21 | 1171 | 37 | 1346 | 52 | 1566 | 67 | 1872 | | 6 | 1044 | 22 | 1180 | 38 | 1359 | 53 | 1583 | 68 | 1897 | | 7 | 1052 | 23 | 1190 | 39 | 1372 | 54 | 1601 | 69 | 1921 | | 8 | 1060 | 24 | 1199 | 40 | 1384 | 55 | 1618 | 70 | 1946 | | 9 | 1067 | 25 | 1210 | 41 | 1398 | 56 | 1637 | 71 | 1974 | | 10 | 1075 | 26 | 1221 | 42 | 1412 | 57 | 1656 | 72 | 2000 | | 11 | 1083 | 27 | 1231 | 43 | 1426 | 58 | 1676 | 73 | 2031 | | 12 | 1091 | 28 | 1242 | 44 | 1440 | 59 | 1695 | 74 | 2059 | | 13 | 1100 | 29 | 1252 | 45 | 1454 | 60 | 1715 | 75 | 2087 | | 14 | 1108 | 30 | 1261 | 46 | 1470 | 61 | 1738 | 76 | 2116 | | 15 | 1116 | 31 | 1275 |