ASTM F703 describes a test for silicone implants to assess gel bleeding. This test checks the implant for the migration of silicone gel through the elastomer shell. The implants are placed on platinum-cured silicone discs (70 durometer) with a diameter of 50 mm and stored for 8 weeks at 43.3°C. The weight of the silicone discs is measured weekly to determine any change in weight. Control discs, stored under the same conditions without implants, are used to account for variations due to environmental factors. ASTM requires a minimum of three samples of each implant type and three additional control discs.