I bought this kit and I found little particles of water inside the fuel cell as if it had been used before, is it normal?

Hi Sebastian,All of our products are brand new. Please test and check if the fuel cell is working properly. Else, please contact Customer Service to start the RMA process.

What are the specs on the tubbing?

silicon tubing, 2mm inner, 4mm outer diameter

A PEM cell, tubing (~2 ft), 1 dc motor, a battery case with switch, a solar cell, 2 reservoirs for the O2 and the H2, 2 stands, wires a CD with instructions. very straight forward to follow.

If the fuel cell generates water as subproduct, How does water have to be removed from fuel cell for avoiding damage?

I haven't used mine in a while but I'm pretty sure it is a closed system. There is water at the beginning that is split into H and O with electrolysis and then that same H and O are combined back into water with the fuel cell. the first step requires electricity (solar panel) and the 2nd step makes electricity. Mine came with a small motor that ran in step 2. you don't have to remove excess water or add more water as this is all happening. it's a closed system.

Horizon Fuel Cell Technologies Solar Hydrogen Education Kit

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Description

☀️ Fuel the future with clean energy innovation today!

BUILD INNOVATE - Includes fuel cell, electric motor, and propeller blade to jumpstart your own futuristic clean energy projects.
STEM DRIVEN LEARNING - Comes with a comprehensive experiment manual, assembly guide, and interactive animations to deepen your renewable energy knowledge.
COMPACT READY TO USE - Lightweight (0.58 kg) and portable kit with everything needed to assemble and experiment right out of the box.
FUTURE PROOF EDUCATION - Designed for young innovators aged 12-15, inspiring the next generation of clean energy scientists and engineers.
HARNESS THE SUNS POWER - Generate zero-carbon hydrogen fuel using only sunlight and water for a truly renewable energy experience.

The Horizon Fuel Cell Technologies Solar Hydrogen Education Kit empowers young learners to explore renewable energy by generating hydrogen fuel from solar power and water. Featuring a fuel cell, electric motor, propeller, and a full educational curriculum, this compact kit offers hands-on STEM learning that inspires innovation in clean energy technology.

Specifications

ASIN	B00202CUZ4
Age Range Description	Kid
Best Sellers Rank	#413,752 in Toys & Games ( See Top 100 in Toys & Games ) #3,564 in Educational Science Kits
Brand Name	CEBEKIT
Customer Reviews	4.1 4.1 out of 5 stars (126)
Educational Objective	STEM
Global Trade Identification Number	00696748421094, 06942503401028
Is Assembly Required	Yes
Item Dimensions	8.27 x 5.91 x 3.94 inches
Item Weight	0.58 Kilograms
Manufacturer	Horizon - Toys
Manufacturer Maximum Age (MONTHS)	180.0
Manufacturer Minimum Age (MONTHS)	144.0
Manufacturer Part Number	FCJJ-16
Manufacturer Warranty Description	1 year warranty against manufacturer defects
Material Type	Plastic
Model Number	FCJJ-16
Theme	Space
UPC	696748421094
Unit Count	1.0 Count

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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