What are the limitations of Refractometer?

Tedious calibration No instrument protocol Operator dependent readings( limited accuracy) Long and difficult thermosetting (water bath is required after each experiment)

Explanation:

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in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.