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Used with Superconductivity Demonstration Kit EM1583-01.
Disc Size: 29mm d x 2.9mm thick
Lifespan: Depends on maintenance (approx. 2 years) Humidity, moisture and water will break the disc down. When the crystals break down they will produce a whitish haze. You increase their life span by storing them protected in a freezer or refrigerator to keep the humidity down.
You can place them in a small oven at 150 deg c. after use just to dry them out.
