QTY. 1. BYK GARDNER LIQUID COLOR STANDARDS, 18 COLORS, COLOR OF TRANSPARENT LIQUIDS COMPARED WITH LIQUID STANDARDS FOR GARDNER COLOR SCALE. THE COLOR OF TRANSPARENT LIQUIDS IS CRITICAL AS A CHANGE CAN INDICATE CONTAMINATION OR IMPURITIES IN THE RAW MATERIAL OR PROCESS VARIATIONS CAUSED BY HEATING AND OXIDATION. VISUAL TESTS HAVE BEEN ESTABLISHED BY COMPARING THE SAMPLE TO A KNOWN STANDARD. THE STANDARD THAT THE SAMPLE FALLS CLOSEST TO THEN BECOMES THE VALUE FOR THE LIQUID. THE GARDNER LIQUID COLOR STANDARD COMPARATOR PROVIDES THE ENTIRE GARDNER COLOR SCALE, AGAINST WHICH A LIQUID SAMPLE CAN BE VISUALLY COMPARED. THE GARDNER COLOR SCALE RANGES FROM 0 (DISTILLED WATER) TO 1 (LIGHT YELLOW), THEN CONTINUES TO A DARK, MURKY 18. OVER THE 0 TO 18 RANGE, THERE IS AN INCREASE IN YELLOWNESS, DECREASE IN LIGHTNESS AND CHANGE IN HUE FROM A RED YELLOW TO GREEN YELLOW. MOST APPLICATIONS RANGE FROM 0 TO 8 IN GARDNER COLOR. ).