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WARNINGS: (1) Indoors, where you must use an artificial sun, do not put your bright light source close to the PV panel.  A 125 - 150 Watt incandescent "construction" light should be 12 - 15" from the PV panel, to avoid overheating and cracking. (2) The system will sometimes mysteriously stop, or refuse to start, even in bright sunshine, if the fuel cell is "waterlogged", i.e. liquid water exhaust has clogged the flow passages. You need to clear those fuel cell passages by disconnecting the upper ends of both H2 and O2 lines from columns to fuel cell. Blow them out with a baby aspirator squeeze bulb, or by blowing thru the tubes to clear the water. (3) The large columns hold much water.  Keep them full, to reduce the startup time as H2 and O2 replace the air.  The columns will be heavy, easily escaping their magnetic bases if you carry them other than carefully and flat.

People need to understand complete hydrogen energy systems, from photons and moving air and water molecules to "work", which is what we humans want, in its many forms from heat and light to motion and manufacturing.  Therefore, every H2 professional should have one of these, carry it everywhere, assaulting people in crowds with, "Want to see some hydrogen ?", as I did at my October '21 college reunion. Great fun. Meet lots of people. Good for Earth. See:  www.leightyfoundation.org/earth.php

This "Pro" version is worth the extra $ 100 price over the "Junior Basic", which is more robust, for school use, but where the bubbles are much less visible and dramatic.  The "Pro" version also easily assembles and disassembles for compact transport. Use a sports water bottle to carry your distilled water supply. Getting water back into your supply bottle from the "Pro" tanks is tricky, as you move to your next appointment.

This is a great improvement on the "Junior Basic" for helping everyone, especially decision-making adults who determine energy policy, "get it" about how complete hydrogen energy systems "work" and why they may be very important to humanity's energy future. Dramatically-visible bubbling of H2 and O2 in the large columns is the key difference. See our video: https://vimeo.com/576606054 These big columns and the spinning propeller are a great attention-getter. Have your elevator speech ready, including blocking the PV panel with your hand or a card, asking "The sun's gone down. The bubbles have stopped (although a few more will emerge, for ~30 seconds). Why is the propeller still spinning ? Do you see any batteries ? Is this perpetual motion ? Where's the energy storage ?"

Great products! We have been using this in our electrolyzers for years.

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thanks for the good product

thanks for the good product

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This is an excelent material as electrode for electrodeposition of nanomaterials. Also, it acts great for water splitting! I recommend it a lot!

thanks for the good product