Communicating Capillary Tube Set
Use this tube set to demonstrate that capillary rise varies according to the inner diameter of a tube...
Use this tube set to demonstrate that capillary rise varies according to the inner diameter of a tube, and that the molecules of a liquid are more attracted to glass than to other liquid molecules.
Age: 10+ this is not a toy, it is made of fragile glass
What You Get
Four glass capillary tubes, each with a different inner diameter, connected to a large tube serving as the liquid reservoir. All mounted on a stand, with a total height of 150mm. How Does It Work? Capillary action occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (cohesion within the liquid) and adhesive attraction between the liquid and container act to lift the liquid.
In short, the capillary action is due to the pressure of cohesion and adhesion which cause the liquid to rise against gravity.
- Capillary action
- Surface tension
WARNING: CHOKING HAZARD - Small Parts. Not for children under 3 years.
What are the shipping costs?
FREE Shipping is available on all orders over $120 to anywhere in Australia!
Orders under the value of $120 incur a low flat rate shipping cost of only $9.95 to anywhere in Australia.
Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process. Please conact us if you have any queries with these services.
In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.
How long will it take for my order to arrive?.
You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.
All standard orders are shipped using Australia Post's eParcel service, so you'll be kept fully informed of the progress of your order during its journey to you. Aside from receiving regular email updates, you can enter your tracking number into Australia Post's website at any time for information about the delivery status of your order.
International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.
When will my order be shipped?
We ship every Victorian business day. Orders received and paid for by 12pm AEST time will generally be shipped the same day.
If you require your order urgently, we have a next day delivery express service available.
What locations do you ship to?
We ship to both Australian and International customers.
What shipping options are available?
The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.
We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.