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Posted 20 hours ago

Finish Dishwasher Salt 5 kg, Pack of 1

£10.695£21.39Clearance
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About this deal

To find out how hard the water in your home is, consult your water supplier – you can usually find the information online. You'll be able to find the concentration of calcium and magnesium ions, usually in millimole per litre (mmol/l). Dishwasher cleaner, salt and rinse aid have the massively important task of cleaning the machine that does the cleaning. Namely, they stop your dishwasher from retaining dirt, passing grime onto your dishes and will enable it to clean your dishes more effectively. Not as elegant a job as the dishwasher itself, perhaps, but still important, nonetheless.

On a box of Finish dishwasher salt you’ll see ‘100% better protection’, but if you read further you’ll see this isn’t compared to other dishwasher salts; it’s only compared to not using salt at all. If the salt you use doesn't have anti-caking agents, such as calcium carbonate or magnesium carbonate, then you can use it. Although there would be little benefit as it would likely be more expensive than regular dishwasher salt. Whenever you're topping up the salt in your dishwasher you're aiming to make a saltwater brine, so you don't want to fill it up to the point that the water inside is overflowing. As far as I am aware, Finish only make products for dishwashers and that in itself tells you something.

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Only fill up the salt to the water level inside the salt compartment. The amount you put in depends on your dishwasher, so there’s no precise measurement for this process. I use their power ball tablets and use it with this salt, for the perfect results every time. I mostly use the dishwasher on the fast 1hr setting and this combination of detergents has no issue with dealing with whatever I put in. Most dishwashers also now have a salt refill light. If your dishwasher doesn’t have indicator lights, it’s a good idea to refill the salt about once per month.

Depending on how many washes you do you might have to fill up the rinse aid every few weeks. When doing so it can sometimes have a maximum fill line, which you should not go over. It needs to be 100% NaCl, and cooking salts often have anti-caking agents to stop them from clumping together. And only put salt into the softener unit. The salt you pour in the softener unit never actually touches your dishes; it just stays in the unit itself. If you leave loose salt in the dishwasher, not only will it not work properly, but it may also give you slightly dirty (or salty) dishes. If you think you're having to refill it too often then you could try lowering the water hardness setting on your dishwasher.

It needs to be this because the sodium in dishwasher salt combines with resin balls in your dishwasher’s workings to absorb the hardness. The resin balls have a negative atomic charge and the dishwasher salt has a positive atomic charge. The calcium and magnesium swap with the sodium ions, removing the ‘hardness’ and softening the water. So any anti-caking agents or magnesium salts will just defeat the purpose of removing magnesium. On the supermarket shelves there will likely be a few options, including Finish and the supermarket own-brand version. You can often adjust the salt setting on your dishwasher to suit the hardness of the water in your area. You could have to refill the salt every month if you live in a hard water area and run your dishwasher often.

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