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.
Pulse oximeters are medical devices used to measure the oxygen level (or oxygen saturation) in the blood. Pulse oximeters are considered to be a noninvasive, painless, general indicator of oxygen delivery to the tissues (e.g., finger, earlobe, forehead, toe or nose).isks of using a Pulse Oximeter. Pulse oximetry is a quick, noninvasive method of measuring oxygen saturation in the blood. Risks associated with using a pulse oximeter are minimal and rare. Prolonged application of the probe may cause tissue breakdown at the application site.