With Two Sensors - One for triaging radiation exposure and another for monitoring tampering
Radiation Safety Sensor: Develops a green/gray color, monitors 20-10,000 mSv (2-10,000 rad) and provides early warning
FIT™ (False positive/negative, Inactivation and Tamper) Indicator: Multi-indicator (1) central dot changes from dark blue-to-red if heated maximum operating temperature, 90°C (2) area surrounding central dot turns blue simultaneously monitors shelf-life expiration and/or if a false positive has occurred due to prolonged exposure to high temperatures and UV/sunlight
Response retention: Full, Effect of Dose rate: Negligible
Uncertainty: Visually: Dimensions: Size of credit card (Length: 8.5 cm, Width 5.5 cm, Thickness 0.5 mm, Weight: 2 g)
Energy dependency: Independent of energy (Over 30 KeV X-ray)
Post radiation effect: 90-95% color development within minutes, the rest within hours
Effect of temperature of radiation: Negligible (less than 0.1%/°C over minus 20°C to plus 60°C)
Maximum operating temperature: ~90°C (Temperature on a car's dashboard under direct sunlight can reach as high as 80°C). FIT™ Indicator will monitor such exposure
Laundry resistance: Passes a few residential laundry cycles
Effect of average humidity: None
Effect of sunlight: Negligible for a week of average direct sunlight (two weeks of winter and a few days of summer sunlight). Dosimeters can be read a thousand times under sunlight. FIT™ Indicator will monitor overexposure to UV/sunlight
Effect of ambient light: negligible for a month
Support equipment: None needed to estimate dose
Service life: One years at 22°C or when color of FIT™ Indicator matches its color reference bars
Other unique features:
Tamper resistant and tamper evident. Other internal indicators for monitoring false positives, false negatives, and tampering
No electronics or moving parts, reliable, rugged and useful for radiation protection and triaging radiation exposure information and medical treatment