What are salt tablets?

Salt tablets . Sounds simple, right? Yet they play a significant role in protecting your equipment, improving water quality, and reducing your maintenance costs. Whether you work in hospitality, manage a swimming pool, or have a water softener at home, these small tablets make a big difference.

In this blog you can read what salt tablets are, how they work and what you use them for.

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Hendi salt tablets are specially formulated for use in water softening systems. They help prevent limescale buildup and contribute to the hygienic operation of the system.
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What exactly are salt tablets?

Salt tablets are pressed cubes made of pure sodium chloride (NaCl), specially developed for use in water softeners. Unlike table salt, they are not intended to add flavor, but to combat limescale.

The tablets are compressed into a firm shape so that they:

...dissolve slowly and evenly,
...do not clump,
...do not cause residue or cloudy water.

The result? A stable salt solution that effectively regenerates your water softener.

Why are salt tablets necessary?

To understand this, you need to briefly understand how a water softener works. This device removes calcium and magnesium ions from the water – the culprits of limescale. The softener does this through a resin filter. But that resin becomes saturated over time.

Then the regeneration process comes into play. A salt solution (made of water and salt tablets) rinses the resin clean, allowing it to reabsorb limescale. Without salt tablets, your water softener won't work. Or at least, it won't work properly.

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With a water softener, you prevent limescale buildup. This keeps your appliances in top condition for longer, and the quality of your dishes remains consistently high.
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What are the benefits of salt tablets?

Salt tablets may be small, but they pack a punch. Especially in professional settings like restaurants, laundromats, or swimming pools. These are the main advantages:

1. Protection against limescale

Limescale builds up slowly in pipes, boilers, dishwashers, and coffee makers. This leads to malfunctions, reduced performance, and high maintenance costs. Salt tablets keep your water softener actively filtering limescale from your system.

2. Extends the life of your equipment

Removing limescale prevents wear and tear on heating elements and pipes. Machines demonstrably last longer when fed with soft water.

3. Saves energy

Limescale forms an insulating layer, meaning heating elements require more energy to heat water. Soft water = faster heating = less consumption = lower energy costs.

4. Hygiene and flavour retention

In hospitality and food service, you want pure water for coffee, tea, ice cubes, or dishwater. Hard water affects the taste and can harbor bacteria. Salt tablets keep your water soft, clean, and tasteless.

What do you use salt tablets for?

Salt tablets are used in many places, such as:

• Catering kitchens – for coffee machines, combi-steamers, dishwashers
• Laundromats and car washes – for streak-free and limescale-free washing
• Swimming pools – for water disinfection and hardness balance
• Water treatment plants – to optimize regeneration processes
• Households – in compact water softeners for sanitary and white goods

They are suitable for all types of water softeners – from small units to industrial systems.

How do you use salt tablets?

The usage is simple:

• Open the salt reservoir of your water softener.
• Supplement this with the correct amount of tablets.
• Close the reservoir and let the water softener do its work.

Most systems automatically indicate when the salt is low. Note: Always use high-quality salt tablets (such as those from HENDI) to prevent clumping and malfunctions. Cheap salt can cause spores, cloudiness, or irregular regeneration.

What should you pay attention to when purchasing?

When choosing salt tablets, pay attention to:

• Composition: 100% pure sodium chloride (no additives)
• Form: tablets, no hassle with powder or flakes
• Solubility: even and lump-free
• Suitability: for your type of water softener
• Packaging: resealable, easy to dose

Small product, big impact

Salt tablets may not be the most exciting part of your kitchen or system, but they're crucial. They keep your water softener operational, protect your appliances, ensure cleaner water, and save you a lot of time and money.

Whether you're a chef, barista, installer, or entrepreneur: good salt tablets make your work easier, cleaner, and more efficient.