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* Please note that the name 'actinic bulb' can be a little confusing. Most typical 'actinic' bulbs emit around 420nm, but the Philips' 'actinic type 05 bulb' emits mostly at around 370nm. Please check the specs for your lamp to be certain which you have.

PPM-1  Short-Wavelength-UV sensor

PPM-1  Long-Wavelength-UV sensor


PPM-2  Short-Wavelength-UV sensor

PPM-2 Long-Wavelength-UV sensor