Adjustments to the concentration of water and salts within the urine takes place mainly in the distal parts of the tubules and in the collecting tubules, by altering the permeability of the membranes of cells lining the nephron walls. These changes are brought upon to two hormones, ADH and aldosterone.
Use for Colorimetric and Turbidimetric Determinations. These photometric colorimeters use specific light filters to give readings on a unique KlettTM scale. The readings are directly proportional to the concentration or optical density of a solution, in accordance with Beers Law.
MacAdam ellipses have long been used. to define the color point specification of lamps, and that use is. becoming even more prevalent as we move to using solid state. lighting devices where the necessary evil of binning becomes an. essential concept. MacAdam ellipses provide a guideline as to how accurate.