The timers contain two fluids of different densities that do not mix. They "mix" like oil and water.
The heavier liquid is colored and is observed to fall.
Only the spiral timer is available at this time. Body and falling liquid color combinations in stock are white with blue, yellow with red, and reddish pink with green.
Click here to see the timers in action (file size = 0.122 MB).
Colors and styles vary. The timers stand 5" (13 cm) high.
Caution: liquid may be toxic. We do not recommend these timers for children.
Gift wrap orders: input salutation in the comment section at the end of the ordering process.