It comes with a heating pad and a thermometer strip, or you can use the defrost setting in your car and set it over the dash vents
There is no way to check. Synthetic urine is chemically equivalent to real urine. However most labs check the temperature of the urine and know the exact temperature it should be at the moment you give it to them. That's how most people get caught.
No
No
After opening and heating once how long does synthetic urine last
No. Synthetic urine is a thing. Felonies are crimes, and describe actions, not things. Purchasing or producing synthetic urine may be a felony, but the substance itself cannot be felonious.
If temperature is being used to verify that the urine came from the correct person the temperature of the sample is an indicator that the urine is/may not be a fresh/valid sample...if the temperature is lower than expected.
only to eat
no
Drug users commonly use synthetic urine to pass drug tests required by employers and probation officers. Synthetic urine is made of sodium chloride of barium nitrate (depending on blood type) and red food dye.
No, because it is simply not urine.
No, it is not safe to reuse synthetic urine. Once synthetic urine has been used, it is contaminated and should not be reused. Using contaminated urine may lead to inaccurate results in drug tests and other applications.
They Could Tell Its Not Real Urine And You Could Get In Trouble