-- Empty
minetest.register_craftitem("sbz_chem:empty_fluid_cell", {
    description = "Empty Fluid Cell (Empty)",
    inventory_image = "fluid_cell.png",
})

-- Water (H₂O)
minetest.register_craftitem("sbz_chem:water_fluid_cell", {
    description = "Water Fluid Cell (H₂O)",
    inventory_image = "fluid_cell.png^[fill:1x4:6,5:#87CEEB",
})