Hold the bottom bulb in the palm of your hand and wrap your fingers around it. The heat of your hand increases the temperature of the gas in the bottom bulb. The increase in temperature creates an increase in air pressure; the gas expands. This increased pressure pushes the liquid in the bottom bulb up the tube to the top bulb. When all of the liquid has transferred from the bottom bulb, air bubbles are forced up the tube from the bottom and this causes the liquid in the top to look like it is boiling.
Features
- 21cm
- This is not a toy and not for use by children.
Prompt shipping and expert packing
Because of our long-standing partnership with UPS, FedEx, DHL and many other world-class carriers, we can provide an array of shipping options. Our warehouse staff is highly educated to pack your items precisely according to the specifications we offer. Before they are shipped, your goods will be thoroughly examined and secured. Everyday, we send to thousands of customers across different countries. This is a testament to our determination to become the largest online retailer worldwide. The warehouses and centers for distribution are situated in Europe, as well as the USA.
Note: Orders that contain more than one item are assigned a particular processing period dependent on the particular product.
We will carefully examine all items ordered before shipping. The majority of orders today are shipped in 48 hours. It is expected that delivery will take between 3 and seven days.
Returns
The inventory is constantly changing and we do not completely manage it because of the fact that multiple parties are involved, including our warehouse and factory. This means that the actual stock could fluctuate at any moment. Be aware that your order may become unfulfilled when you have placed the order.
Our policy lasts for a period of 30 days. We cannot replace or refund your purchase when it's been 30 days since the purchase.
To be eligible for a return your item must be in good condition and in the same condition that you received it in. You must have the item in its original packaging.
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