Delivery was quick. It is as described.
Kattiy
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What makes this special
Compact 4 cm diameter
Fits practically any standard kitchen tap, and works just as easily loose next to a bottle or glass.
The measurement is in the wire length
Within the Tensor tradition, the Sacred Cubit refers to the length of the copper wire before it was shaped into a ring, not to the final diameter.
The tradition of Slim Spurling
The modern Tensor Ring traces back to this American metalworker, who bent copper wire into his first closed energy object in 1991.
For the tap and the room
Slide the ring over the tap for flowing water, or use it loose on the table, next to your water bottle, or while meditating.
A colour change that comes with pure copper
Solid copper changes colour a little on its own over time. That's completely normal, and even a sign of pure copper. If you prefer the shine, simply polish the ring with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). Exactly how is in the care guide.
Composition
99.21%
copper
99.21% copper, measured independently
The material is analysed by RTC Laboratory in Moradabad, a NABL-accredited lab, tested to ASTM-1621 and IS-228. In the sample that was analysed the measurement came out at 99.21% copper and 0.75% zinc; the remaining 0.04% falls within the measuring range of the analysis. Food safety is covered by a second report, from URS Products and Testing: tested against EC 1935/2004 and REACH, using the heavy metal limits from EU 10/2011 as the benchmark.
- 99,21% copper
- 0,75% zinc
- 0,04% remainder
- RTC Laboratory Moradabad
- composition, NABL-accredited
- URS Products and Testing
- food safety, EU regulation
- 19 heavy metals
- every one measured as "Not Detected"
What you actually get
In the box
- Copper tensor ring, 4 cm
- Luxury velvet carry pouch
- Luxury black jewellery box
- Card with a QR code to the digital guide
The tensor ring is a closed ring of solid copper, 4 centimetres across. You slide it just above the spout of your kitchen tap, where it stays put without anything to fasten. The water moves through the open centre; the ring does not touch it.
It does not have to go on the tap. Using it loose works just as well: beside a water bottle or a glass, next to a small personal object, on your desk or simply in your hand.
Those 4 centimetres are the visible diameter of the closed ring. The measure this tradition is built on is a different one: the length of copper wire the maker measures out before bending it into a loop, the sacred cubit. Kopero uses a compact fraction of it, so the ratio holds and the ring still fits a tap. Sacred Cubit, Lost Cubit and New Cubit explains those measures, and who was Slim Spurling tells you where the modern ring comes from.
Why copper and not some other metal? Copper is the yardstick the world measures electrical conductivity against: the international unit, IACS, is literally defined on a piece of annealed copper wire, and of all metals only silver conducts better. That this tradition bends copper wire in particular follows from that. How the conduction works physically is in why copper conducts.
That same conductivity is why an MRI room is lined with copper sheet and why the lightning protection standard specifies copper. Where the engineering turns into tradition is in copper as a shield.
How to get the most out of your copper
A tensor ring works with shape, not with filtration. It removes nothing from the water and does not take the place of a filter, but it sits happily alongside one: purifying and structuring are two different things. Where the idea comes from that a closed copper form does something is set out in Shape Power.
If your spout is thicker than 4 centimetres, use the ring loose rather than prising it open. Copper is pliable, and opening it up changes the very measure the ring was made to.
Above the sink it gets water and steam every day, so you will see the discolouration there sooner than on a ring that sits on a desk. Polish it now and then with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice) and dry it straight away. Why is my copper turning green or black explains what that colour means.
Around the tap in six steps
You slide the ring around the tap or use it loose. No power, no filter and no upkeep are involved.
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Unbox it and polish it once
Rub the ring with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice), rinse and dry right away.
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Measure your tap quickly
4 centimetres across: fits almost any kitchen tap. If your spout is thicker, use the ring loose.
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Slide it around the tap
Slide it on just above the spout. It needs no fixing and does not touch the water.
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Let the water flow
The water flows through the open centre. Use it to drink, cook or water plants.
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Or use it loose
Lay it next to a water bottle or glass, put a small object in it or hold it in your hand.
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Keep it clean
Take it off now and then and wipe it with a dry cloth. Remove limescale with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice), then dry right away.
Read the full guide
The packaging also carries a QR code that takes you straight to this guide.
Small in size, rich in background
The diameter, the closed shape and the wire length based on the Sacred Cubit each carry their own meaning in the Tensor tradition.
The continuous circle is made of twisted solid copper and is designed as a compact energy object.
The 4 cm refers to the outer diameter of the shaped ring, making it easy to place.
In the Tensor tradition, it's not the diameter but the original wire length that's linked to the Sacred Cubit. The wire is then shaped into the ring.
Place the ring around a suitable tap, or set it down as a standalone energy object near water, plants, crystals or your meditation spot.
In the velvet pouch you keep it safe and take it along.
You unpack a luxury black jewellery box. So you can give it away straight from the box, without wrapping anything around it.
A Kopero card is inside the box. The QR code on it takes you to the digital manual.
Why this ring
4 cm
Closed ring
Tap
Around the tap, or simply loose
Conductivity
Copper conducts better than any metal but silver
Spurling
From the Slim Spurling tradition
Pouch
Velvet pouch for storing and carrying
For life
Polish it back, and melting copper down costs it nothing
On the tap, in a few seconds
Slide it on and you're done: no tools, no adjusting, just around the spout. After that, it stays put on its own.
Loose too, among your things
It doesn't have to go on the tap. Lay the ring loose next to a candle, a plant or a crystal: within the tensor tradition it counts as a compact energy object that works with whatever is around it.
Manufacturer and product information
- Manufacturer
- Kopero is a brand of JL Enterprises, Torenlaan 5, 1402 AT Bussum, the Netherlands.
info@kopero.nl - Product
- Kopero Copper Tensor Ring
EAN 8720726791410 - Safe use
- The ring is small and bent by hand from copper wire. Keep it out of reach of young children and do not bend it out of shape: the diameter belongs to the measure it was made to.
Thirty days to decide
Unpack it at your own pace, feel the weight and see whether the size suits you. If it is not for you, send it back within thirty days and get your money back. If you use it for longer than you need to judge it, we may deduct for loss of value. You arrange the return yourself with whichever carrier suits you best, or you ask us for a return label. The cost of sending it back is yours.
Read the return policyReviews of this product
4.9 (20 reviews)
Translated from Dutch
In one word: fantastic
Anika
Verified purchase
To vitalise our water. Thank you!
Miriam
Verified purchase
Beautiful ring to put around our tap
Lora
Verified purchase
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Frequently asked questions about this product
Does the Tensor Ring fit any tap?
The ring has a diameter of 4 centimetres, which fits practically any standard kitchen tap. If your spout is thicker than that, measure it before ordering, or use the ring loose instead of around the tap.
Is the Tensor Ring a water filter?
The Tensor Ring works through shape, not through filtration. So it doesn't remove anything from the water and doesn't take the place of a filter, but it sits happily alongside one: purifying and structuring are two different things. It works entirely passively, without power or maintenance.
How do I use the ring if I don't want to put it around the tap?
Just place the ring loose next to a water bottle or glass, put a small object inside it, or hold it in your hand while meditating. The ring doesn't need to be attached to anything to work.
Where does the Tensor Ring tradition come from?
The modern Tensor Ring traces back to American metalworker Slim Spurling, who bent copper wire into his first Light-Life Ring in 1991, a closed, ordering energy object. Since then, the ring has mainly been used within this tradition on flowing water.
How do I take care of the Tensor Ring?
Wipe the ring with a dry cloth every now and then. If limescale builds up, polish it off with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). If the copper colour changes on its own, that's completely normal. Step by step instructions are in the care guide.
Does copper shield radiation?
Yes, and that is ordinary electrical engineering. Copper is one of the best conductors there is, which makes it work as a Faraday cage: fine copper mesh attenuates around 60 decibels across the range from 10 megahertz to 1 gigahertz, which is 99.9 percent of the signal. Hospitals use the same physics, because an MRI room is lined with copper sheet as standard. We do not sell that mesh and attach no health claim to it, but it is exactly the same conduction this ring is made of. The whole story is in copper as a shield.
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30-day right of return
- Order before 11:30 pm, usually delivered in 4-5 days Temporarily out of stockA new delivery date has not yet been confirmed.
- Ships from Tilburg, the Netherlands
Kopero Copper Tensor Ring
Order before 11:30 pm, usually delivered in 4-5 days
Temporarily out of stockA new delivery date has not yet been confirmed.
€24,95