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With long-term storage, a biofilm can form on the inside of the canister, especially of the canister is exposed to sunlight. In this case, having a canister with a large diameter opening can make cleaning easier. Many water canisters are made of UV resistant food-grade plastic to limit UV damage to the container, as well as limit biological growth.
The term "watering can" first appeared in 1692, in the diary of keen cottage gardener Lord Timothy George of Cornwall. [1] Before then, it was known as a "watering pot". [2] In 1886 the "Haws" watering can was patented by John Haws. The patent read "This new invention forms a watering pot that is much easier to carry and tip, and at the same ...
Founder John Haws developed the watering can design still used by the company today while growing vanilla during his British Colonial Service in Mauritius. [1] He patented the design and formed Haws Watering Cans, but died in 1913 before having the chance to accept a Royal Horticultural Society medal and an invitation to the inaugural Chelsea Flower Show in 1913.
Cans of various sizes are also used for storage of potable water for emergency preparedness. Water is an important part of individual or government stockpiles. Water was stored in steel cans, lined with plastic bags, under the United States Civil Defense program. Approximately twelve million 17.5-US-gallon (66 L) cans were deployed, and could ...
An elevated water tank, also known as a water tower, will create a pressure at the ground-level outlet of 1 kPa per 10.2 centimetres (4.0 in) or 1 psi per 2.31 feet (0.70 m) of elevation. Thus a tank elevated to 20 metres creates about 200 kPa and a tank elevated to 70 feet creates about 30 psi of discharge pressure, sufficient for most ...
Unexplained changes in cholesterol may help identify older adults at risk for dementia,study finds. Experts explain cholesterol and dementia risk.
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