1. Film badge: Measure and record radiation exposure due to gamma rays, X-rays, and Beta particles. Permanent record Cheaper Energy dependence Fading film also fades with time Size limits the ability to monitor fingers or eyes.

2. Thermoluiminiscent dosimeter (TLD): Monitor radiation exposure. Advantages Size The light emitted is then correlated to dose received Insensitive to temperature and humiditiy Not fade with time Re-useble Disadvanteges Once the TLD has been “read”, memory is cleared Cost.

3. Pocket Ion-Chamber Dosimeter Evaluate possible radiation exposure quickly. Sensible to gamma only. Located in Emergency kits. Advantages: Direct read-out: Self-reading Records dose Disadvantages Sensitive to gamma only Extremely sensitive to shock

4. Digital Dosimeter Activated using the Electronic Dosimeter reader Self-reading, digital display of accumulated dose and dose rate Visual and audible alarms for accumulated dose and dose rate Silicon diode detector to detect gamma radiation (sensitive to gamma only) Resistant to shock Downloads dose and dose rate data to Radiation Exposure Control database when deactivated by the ED reader