There are several papers on infrared healing on nih.gov. They average around 20 minutes for recommended exposure. If I remember right there was no damage from longer exposure, it just didn’t do anything useful. All of the papers I read said they used the light once a day.I have a gooseneck lamp attached to a nearby shelf. I’m acclimated to pumping, so it’s convenient to use the light through the tube for 15 minutes on the bottom, 15 minutes on the top, during a 30-minute session. If you’re using 20-minute or shorter sessions, just do one surface for one session, the other for the next. You can do left/right if it’s more convenient.
There are various plastics used for transparent pump tubes. I looked up the IR transmissivity of them a while back, and they’re all 90 to 92% at 660-850 nanometers, so no problem for illuminating through the tube.
That wavelength of IR is ‘generally considered safe’ by the FDA, but there’s a condition called ‘glassblower’s cataracts’ from looking into furnaces radiating a lot of IR. I arrange a pillow or a roll of paper towels to block direct sight of the lamp when necessary.
My IR illuminator gets warm to the touch, but not hot. I move it up until it’s actually touching the tube.
Thank you so much!! You’ve saved me a lot of worry and headache. Out of curiosity which IR illuminator do you use?