Time pH pH seconds units units 0 9.5 9.3 5 9.5 9.3 10 9.5 9.3 15 9.5 9.3 20 9.5 9.3 25 9.4 9.3 30 9.5 9.3 35 9.5 9.3 40 9.5 9.3 45 9.5 9.3 50 9.5 9.3 55 9.5 9.3 60 9.3 9.3 65 9.4 9.3 70 9.4 9.3 75 9.4 9.2 80 9.4 9.2 85 9.4 9.2 90 9.4 9.2 95 9.4 9.2 100 9.4 9.2 105 9.4 9.2 110 9.4 9.2 115 9.4 9.2 120 9.4 9.2 125 9.4 9.2 130 9.4 9.2 135 9.4 9.2 140 9.4 9.2 145 9.4 9.2 150 9.4 9.2 155 9.4 9.2 160 9.4 9.2 165 9.4 9.2 170 9.4 9.2 175 9.4 9.2 180 9.4 9.2 185 9.3 9.2 190 9.3 9.2 195 9.3 9.2 200 9.3 9.2 205 9.3 9.2 210 9.3 9.2 215 9.3 9.2 220 9.3 9.2 225 9.3 9.2 230 9.3 9.2 235 9.3 9.2 240 9.3 9.2 245 9.3 9.2 250 9.3 9.1 255 9.3 9.1 260 9.3 9.1 265 9.3 9.1 270 9.3 9.1 275 9.3 9.1 280 9.3 9.1 285 9.3 9.1 290 9.3 9.1 295 9.3 9.1 300 9.3 9.1 305 9.3 9.1 310 9.3 9.1 315 9.3 9.1 320 9.3 9.1 325 9.3 9.1 330 9.3 9.1 335 9.2 9.1 340 9.2 9.1 345 9.2 9.1 350 9.2 9.1 355 9.2 9.1 360 9.2 9.1 365 9.2 9.1 370 9.2 9.1 375 9.2 9 380 9.2 9 385 9.2 9 390 9.2 9 395 9.2 9 400 9.2 9 405 9.2 9 410 9.2 9 415 9.2 9 420 9.2 9 425 9.2 9 430 9.2 9 435 9.2 9 440 9.2 9 445 9.2 9 450 9.2 9 455 9.2 9 460 9.2 9 465 9.2 9 470 9.2 9 475 9.2 9 480 9.2 9 485 9.2 9 490 9.2 9 495 9.2 8.9 500 9.2 8.9 505 9.2 8.9 510 9.2 8.9 515 9.2 8.9 520 9.2 8.9 525 9.2 8.9 530 9.2 8.9 535 9.2 8.9 540 9.2 8.9 545 9.2 8.8 550 9.1 8.8 555 9.1 8.8 560 9.1 8.8 565 9.1 8.8 570 9.1 8.8 575 9.1 8.8 580 9.1 8.8 585 9.1 8.8 590 9.1 8.7 595 9.1 8.7 600 9.1 8.7 605 9.1 8.7 610 9.1 8.6 615 9.1 8.6 620 9.1 8.5 625 9.1 8.5 630 9.1 8.5 635 9.1 8.5 640 9.1 8.4 645 9.1 8.4 650 9.1 8.3 655 9.1 8.3 660 9.1 8.3 665 9.1 8.3 670 9.1 8.2 675 9.1 8.2 680 9.1 8.1 685 9.1 8.1 690 9.1 8.1 695 9.1 8 700 9.1 8 705 9 8 710 9 8 715 9 7.9 720 9 7.9 725 9 7.9 730 9 7.9 735 9 7.8 740 9 7.8 745 9 7.8 750 9 7.8 755 9 7.8 760 9 7.8 765 9 7.7 770 9 7.7 775 9 7.7 780 9 7.7 785 9 7.7 790 9 7.6 795 9 7.6 800 9 7.6 805 9 7.6 810 9 7.6 815 9 7.6 820 9 7.6 825 9 7.6 830 9 7.5 835 9 7.5 840 9 7.6 845 9 7.6 850 9 7.5 855 9 7.5 860 9 7.5 865 9 7.5 870 9 7.5 875 9 7.5 880 9 7.5 885 9 7.5 890 9 7.4 895 9 7.4 900 8.9 7.4 905 8.9 7.4 910 8.9 7.4 915 8.9 7.4 920 8.9 7.4 925 8.9 7.4 930 8.9 7.4 935 8.9 7.4 940 8.9 7.4 945 8.9 7.3 950 8.9 7.3 955 8.9 7.3 960 8.9 7.3 965 8.9 7.3 970 8.9 7.3 975 8.9 7.3 980 8.9 7.3 985 8.9 7.3 990 8.9 7.3 995 8.9 7.3 1000 8.9 7.3 1005 8.9 7.3 1010 8.9 7.3 1015 8.9 7.3 1020 8.8 7.3 1025 8.8 7.3 1030 8.8 7.3 1035 8.8 7.3 1040 8.8 7.2 1045 8.8 7.2 1050 8.8 7.2 1055 8.8 7.2 1060 8.8 7.2 1065 8.8 7.2 1070 8.8 7.2 1075 8.8 7.2 1080 8.8 7.2 1085 8.8 7.2 1090 8.8 7.2 1095 8.8 7.2 1100 8.8 7.2 1105 8.8 7.2 1110 8.8 7.2 1115 8.8 7.2 1120 8.8 7.2 1125 8.8 7.2 1130 8.8 7.1 1135 8.8 7.1 1140 8.8 7.1 1145 8.8 7.1 1150 8.8 7.1 1155 8.8 7.1 1160 8.8 7.1 1165 8.8 7.1 1170 8.8 7.1 1175 8.8 7.1 1180 8.8 7.1 1185 8.7 7.1 1190 8.7 7.1 1195 8.7 7.1 1200 8.7 7.1 1205 8.7 7.1 1210 8.7 7.1 1215 8.7 7.1 1220 8.7 7.1 1225 8.7 7.1 1230 8.7 7.1 1235 8.7 7.1 1240 8.7 7.1 1245 8.7 7.1 1250 8.7 7.1 1255 8.7 7.1 1260 8.7 7.1 1265 8.7 7.1 1270 8.6 7.1 1275 8.6 7.1 1280 8.6 7.1 1285 8.6 7.1 1290 8.6 7.1 1295 8.6 7.1 1300 8.6 7.1 1305 8.6 7.1 1310 8.6 7 1315 8.6 7 1320 8.6 7 1325 8.6 7 1330 8.6 7 1335 8.5 7 1340 8.5 7 1345 8.5 7 1350 8.5 7 1355 8.5 7 1360 8.5 7 1365 8.5 7 1370 8.5 7 1375 8.5 7 1380 8.5 7 1385 8.5 7 1390 8.5 7 1395 8.4 7 1400 8.4 7 1405 8.4 7 1410 8.4 7 1415 8.4 7 1420 8.4 7 1425 8.4 7 1430 8.3 7 1435 8.3 7 1440 8.3 7 1445 8.3 7 1450 8.3 7 1455 8.3 7 1460 8.3 7 1465 8.2 7 1470 8.2 7 1475 8.2 7 1480 8.2 7 1485 8.1 7 1490 8.1 7 1495 8.1 7 1500 8.1 7 1505 8.1 7 1510 8 7 1515 8 7 1520 8 7 1525 8 7 1530 7.9 7 1535 7.9 7 1540 7.9 7 1545 7.9 7 1550 7.8 7 1555 7.8 7 1560 7.8 7 1565 7.8 6.9 1570 7.8 6.9 1575 7.8 6.9 1580 7.7 6.9 1585 7.7 6.9 1590 7.7 6.9 1595 7.7 6.9 1600 7.7 6.9 1605 7.6 6.9 1610 7.6 6.9 1615 7.6 6.9 1620 7.6 6.9 1625 7.6 6.9 1630 7.6 6.9 1635 7.6 6.9 1640 7.6 6.9 1645 7.5 6.9 1650 7.5 6.9 1655 7.5 6.9 1660 7.5 6.9 1665 7.5 6.9 1670 7.5 6.9 1675 7.5 6.9 1680 7.5 6.9 1685 7.4 6.9 1690 7.4 6.9 1695 7.4 6.9 1700 7.4 6.9 1705 7.4 6.9 1710 7.4 6.9 1715 7.4 6.9 1720 7.4 6.9 1725 7.4 6.9 1730 7.3 6.9 1735 7.3 6.9 1740 7.3 6.9 1745 7.3 6.9 1750 7.3 6.9 1755 7.3 6.9 1760 7.3 6.9 1765 7.3 6.9 1770 7.3 6.9 1775 7.3 6.9 1780 7.3 6.9 1785 7.3 6.9 1790 7.3 6.9 1795 7.3 6.9 1800 7.3 6.9 1805 7.3 6.9 1810 7.3 6.9 1815 7.2 6.9 1820 7.2 6.9 1825 7.2 6.8 1830 7.2 6.8 1835 7.2 6.8 1840 7.2 6.8 1845 7.2 6.8 1850 7.2 6.8 1855 7.2 6.8 1860 7.2 6.8 1865 7.2 6.8 1870 7.2 6.8 1875 7.2 6.8 1880 7.2 6.8 1885 7.2 6.8 1890 7.1 6.8 1895 7.1 6.8 1900 7.1 6.8 1905 7.1 6.8 1910 7.1 6.8 1915 7.1 6.8 1920 7.1 6.8 1925 7.1 6.8 1930 7.1 6.8 1935 7.1 6.8 1940 7.1 6.8 1945 7.1 6.8 1950 7.1 6.8 1955 7.1 6.8 1960 7.1 6.8 1965 7.1 6.8 1970 7.1 6.8 1975 7.1 6.8 1980 7.1 6.8 1985 7.1 6.8 1990 7.1 6.8 1995 7.1 6.8 2000 7.1 6.8 2005 7.1 6.8 2010 7.1 6.8 2015 7.1 6.8 2020 7.1 6.8 2025 7 6.8 2030 7 6.8 2035 7 6.8 2040 7 6.8 2045 7 6.8 2050 7 6.8 2055 7 6.8 2060 7 6.8 2065 7 6.8 2070 7 6.8 2075 7 6.8