Most users should ‘heat treat’ B3 film after irradiation.
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Post-irradiation heat treatment of B3 film is necessary to catalyze chemical reaction and finalize the color change.
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Heat treatment makes the B3 film response stable for weeks!
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You measure the B3 film after heat treatment.
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The amount of time between irradiation and heat treatment can be an important factor, especially for certain irradiation processes such as Electron Beam, so please read all the articles in this section!