is a trade name for a class of chemicals (known as Chlorofluorocarbons or CFC's) used as a refrigerant in air conditioning systems. Freon is a gas at room temperature and a liquid when cooled or compressed. Freon gas is colorless, non-flammable and relatively odorless. Some Freons have an ether-like odor.
How should I take my forearm circumference measurement? In order to take your forearm circumference measurement, you should tense your arm muscle and measure around the thickest part of your forearm, as pictured.
Pull back on the fingers of your straight arm until a mild stretch begins in the forearm muscles. Hold this stretch for about twenty seconds. Release the stretch and turn the hand 180 degrees so that your stretch arm is now positioned with the palm facing outward and the thumb pointing out to the side. Using your other hand, pull your fingers back until a stretch begins in the forearm muscles. Hold for ten to twenty seconds.