Random Urine Collection for Urinalysis. Random urine samples are used for urinalysis, which can screen and diagnose metabolic disorders and urinary tract infections. Your doctor may order urinalysis to determine, for example, the cause of bloody urine, abdominal pains or burning sensations associated with urination.
1 Place potato slices into a large bowl of cold water as you slice. 2  Drain, and rinse, then refill the bowl with water, and add the salt. 3  Let the potatoes soak in the salty water for at least 30 minutes. 4  Drain, then rinse and drain again. 5  Heat oil in a deep-fryer to 365 degrees F (185 degrees C).
Cover the potatoes with cold water by 2 inches and add a pinch of salt. Bring the water to a boil. Lower the heat to a simmer when the water starts to boil. Simmer the potatoes uncovered until they pierce easily with a paring knife or skewer â 10 to 20 minutes for whole potatoes and 5 to 10 minutes for diced potatoes. Remove finished whole potatoes with a slotted spoon.