Clinistix, a test strip used to detect glucose in urine, turns green when glucose is present. The color change occurs due to a chemical reaction between the glucose and the reagents on the strip, indicating the level of glucose in the sample. The intensity of the green color can vary depending on the concentration of glucose. Typically, the strip is compared to a color chart to determine the glucose level.
dark urine
Glucose is high in the urine of an untreated diabetic. Glucose itself makes the urine hyperosmolar (concentrated with solutes), which in turn makes it absorb extra water from surrounding tissues, which creates extra, dilute urine. This in turn dehydrates the surrounding tissues making the patient thirsty.
Pyridium, also known as phenazopyridine, can turn your urine an orange to red color. This is a normal and harmless side effect of taking the medication.
orange
In some pools, the cleaners add a chemical into the water, to turn urine blue. Most pools don't have these on these days. But in a pool without the chemical, no urine doesn't change color.
Depending on the amount of glucose (sugar) that is present, the solution will turn a certain color. The progression goes as follows: blue (no glucose present), green, yellow, orange, red, and then brick red or brown for a very high glucose content.
When your urine is a darker color, that means you are dehydrated.
Normal urine color results from a pigment called urochrome. The actual tint will depend on the concentration or dilution of the urine. The color of urine may not always be normal; B vitamins, for example, turn urine green, and carrot juice can turn it orange.UrochromeUrochrome Urochrome
It appears if turn your urine red/pinkish and smell like vitamin B.
In the dialysis tubing bag experiment, if glucose and I2KI are present inside the bag, the color of the I2KI solution will turn blue-black due to the reaction of iodine with starch present in the glucose solution. This color change indicates the presence of glucose inside the bag.
Copper (I) oxide: Cu2O