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for rectal use only
No, you do not need to empty the boric acid from a urine sample bottle before use. The boric acid acts as a preservative to keep the sample stable until it can be tested.
Not all cell phones are compatible with SIM cards. Some only work with a contract, and you need to unlock the phone before you can use a SIM card.
solution is transparent whereas suspension is not transparent. particles in solution are of size less than 100nm.but particles of suspension are of size more than 1000nm.solution is homogeneous mixture whereas suspension is heterogeneous mixture. solution doesn't exhibit Tyndall effect or brownian movement.but suspension exhibits it....
Microbiologists use autoclaves to sterilize equipment, laminar flow hoods to create a clean work area, incubators to provide optimal growth conditions, and pipettes to transfer samples without introducing contaminants. They also use culture media that has been sterilized before use.