Knowledge Base
Tensor rings: who was Slim Spurling and what did he claim?
Discover who Slim Spurling was and how he made the first tensor ring in 1991, inspired by Wilhelm Reich and Nikola Tesla.
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Maintaining a copper bottle: cleaning, polishing and storage
Keep your copper bottle looking good for years: the lemon-and-salt method, what to avoid, and how to store it best.
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How many times a day should you drink from a copper bottle?
The most asked question about copper water bottles: how many times a day do you drink from it? The answer lies in a centuries-o...
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Why is my copper turning green or black? (and is that a problem?)
Your copper bottle or bracelet is changing colour and you're wondering if that's a problem. Reassuring news: it's patina, and t...
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How to recognise real copper: the complete buying guide
Not sure if your copper bottle is really copper? Independent laboratories tested the metal thoroughly. Read how, and what you c...
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Why were people complaining about bad copper 4000 years ago?
A 4000-year-old clay tablet from Babylon holds the world's oldest known customer complaint, about poor-quality copper. The stor...
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The French doctor who accidentally discovered that copper kept cholera away
Paris, 1852: a doctor notices something strange among copper foundry workers during a cholera epidemic. The story of Victor Bur...
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3500 years of copper as medicine: from the Edwin Smith Papyrus to now
From ancient Egypt to the Roman Empire and Ayurveda: copper has played a role in medicine for 3500 years. A timeline through hi...
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Tamra Jal: the Ayurvedic tradition of drinking water from copper
Discover Tamra Jal, the centuries-old Ayurvedic practice of storing water in copper. The origin, the text and why people still ...
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Copper deficiency: how common is it really (and when should you pay attention)
Copper deficiency sounds scary, but with a normal diet it's rare. We explain how much copper you need and when it's worth payin...
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Iron, copper and fatigue: the connection nobody tells you about
Feeling tired despite getting enough iron? Copper plays an essential role in your iron balance. Here's how the mechanism behind...
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Can copper really kill bacteria? The evidence, from the EPA to Southampton
EPA registration, research from Southampton and a drinking water study from India: this is the evidence behind copper's antibac...
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