I have a 300 W UV bulb (http://www.bulborama.com/300R-E27-ULTRA-VITALUX-OSRAM-SUN-LAMP-TANNING-BULB-230-VOLTS-300-WATTS-p711.html).
I am trying to determine the W/m2 without buying a $3k radiometer.
I will be using this bulb to irradiate cells during a protection experiment.
Thank you...