───────────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬───── Modified │ │ │ │ │ │ │ │ │ │ Nessler or │ │ │ │ │ │ │ │ │ │ natural │0.00.│0.01.│0.02.│0.03.│0.04.│0.05.│0.06.│0.07.│0.08.│0.09. water │ │ │ │ │ │ │ │ │ │ standard. │ │ │ │ │ │ │ │ │ │ ───────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴───── Platinum-cobalt standard color. 0.00│ 0│ 2│ 4│ 6│ 8│ 9│ 11│ 13│ 15│ 17 .10│ 18│ 19│ 20│ 20│ 21│ 22│ 23│ 24│ 24│ 26 .20│ 26│ 27│ 27│ 28│ 29│ 29│ 30│ 31│ 32│ 32 .30│ 33│ 34│ 34│ 35│ 35│ 36│ 37│ 37│ 38│ 38 .40│ 39│ 40│ 40│ 41│ 42│ 42│ 43│ 44│ 45│ 45 .50│ 46│ 47│ 47│ 48│ 48│ 49│ 50│ 50│ 51│ 51 .60│ 52│ 53│ 53│ 54│ 54│ 55│ 56│ 56│ 57│ 57 .70│ 58│ 58│ 59│ 59│ 60│ 60│ 61│ 61│ 62│ 62 .80│ 63│ 64│ 64│ 65│ 66│ 66│ 67│ 68│ 69│ 69 .90│ 70│ 71│ 72│ 73│ 74│ 75│ 77│ 78│ 79│ 80 1.00│ 81│ 82│ 82│ 83│ 84│ 84│ 85│ 86│ 87│ 87 1.10│ 88│ 89│ 89│ 90│ 91│ 91│ 92│ 93│ 94│ 94 1.20│ 95│ 96│ 96│ 97│ 98│ 98│ 99│ 100│ 101│ 101 1.30│ 102│ 103│ 103│ 104│ 105│ 105│ 106│ 107│ 108│ 108 1.40│ 109│ 110│ 110│ 111│ 112│ 112│ 113│ 114│ 115│ 115 1.50│ 116│ 117│ 117│ 118│ 118│ 119│ 120│ 120│ 121│ 121 1.60│ 122│ 123│ 123│ 124│ 125│ 125│ 126│ 127│ 128│ 128 1.70│ 129│ 130│ 130│ 131│ 132│ 132│ 133│ 134│ 135│ 136 1.80│ 136│ 137│ 137│ 138│ 139│ 139│ 140│ 141│ 142│ 142 1.90│ 143│ 144│ 144│ 145│ 146│ 146│ 147│ 148│ 149│ 149 2.00│ 150│ │ │ │ │ │ │ │ │ ───────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴───── Footnote B: Zero on the true Nessler scale is about 15 on the platinum scale. LOVIBOND TINTOMETER. The value of the readings of tint and shade by the Lovibond tintometer[66][82][83] has not been commensurate with the labor involved, but it is necessary to make a record of the reflected tint and shade[50] of some waters. The standard color disks used in teaching optics may be used for the purpose. _Procedure._—The white disk supports three movable standard color sectors, red, yellow, and blue, and one movable black sector. All are mounted on a device which can be revolved rapidly, blending the colors into a uniform tint or shade. A scale around the circumference of the disk is used to indicate the percentage of each color or white or black in the blend.