Tablets for Dishwashers

Free from chlorine, phosphates, enzymes and aromas, completely biodegradable


  • For household dishwashers
  • For dishwashers with ion-exchanger only
  • Not to be used for silverware, lead crystal glass and hand-painted chinaware





Special product feature

The Sonett tablets contain minerals and organic constituents which are completely biodegradable. They contain no enzymes, no aggressive chlorinated bleaching agents, no phosphates, and no fragrances.  


Ranges of application

Indicated for all types of household dishwashers.

Only to be used for dishwasher-proof crockery.


Indicated for all types of household dishwashers.


Only to be used for dishwasher-proof crockery. Not to be used for silverware, lead crystal glass and hand-painted chinaware.



Crockery with normal level of dirtying:
1 tablet per washing cycle


Crockery heavily dirtied:
2 tablets per cycle


Important note to ensure good dishwashing results:

Adjust the built-in water softener in your dishwasher to be 8 °dH (German degrees) above your local water hardness.


For doing so, please consult the Instructions for Use of your Dishwasher.


Information about the dishwasher and setting of the ion exchanger


Always keep the compartments for the Regenerating Salt and Clear Rinse replenished. 


Product declaration

Citrate 15–30%

Sodium percarbonate 5–15%

Tetrasodium glutamate diacetate 5–15%

Carboxymethyl inulin 5–15%

Silicates 5–15%

Sodium bicarbonate 5-15%

Sulphated castor oil 1–5%

Sugar surfactant 1–5%

Sodium gluconate 1–5%

Rapeseed oil, certified organically grown <1%

Balsamic additives, certified organically grown / 
collection from wild-growing plants <1%


List of ingredients as per EC 648/2004

Sodium citrate, sodium carbonate, sodium percarbonate, tetra sodium glutamate diacetate, carboxymethyl inulin, sodium metasilicate, sodium bicarbonate, sodium silicate, sulphated castor oil, alkylpolyglucoside C8–C16 (coco glucoside), sodium gluconate, potassium soap*

*certified organically grown


Further information on INCI names ‣


Danger symbol




Causes serious eye irritation. If medical advice is needed, have product container or label at hand. Keep out of reach of children. Wear eye protection. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Origin and properties of the ingredients

The main active ingredients in Sonett’s Tablets for Dishwashers are sodium carbonate, silicates, and sulphated castor oil. Silicates are obtained by fusing sand with sodium carbonate and, thanks to their alkalinity, are capable of modifying grease on dishes by saponification, thus making it water-soluble. These silicates make stuck-on food leftovers swell, thus loosening them. Sodium carbonate, manufactured from common salt and lime, disperses the grease into fine droplets, thus supporting the fat-dissolving property of the silicates. By adding small amounts of sulphated castor oil, the surface tension of the water is reduced, resulting in the dirt being wetted more easily by the water. Sulphated castor oil, also called turkey-red oil, is obtained by the direct reaction of castor oil with sulphuric acid. In addition, the tablets contain bleaching oxygen (sodium percarbonate). During the washing cycle, sodium percarbonate releases oxygen, in addition to water and sodium carbonate. The oxygen thus released serves to remove tea and coffee residues from glasses and cups. Sodium percarbonate is a molecular complex obtained by hydrogen peroxide adsorbing on to sodium carbonate. Citrate, obtained by fermenting sugar-containing by-products such as molasses, is added to the dishwasher liquid to bind lime in the dishwashing water and to protect the machine from deposits. Due to the fact that, despite built-in ion exchangers (water-softener devices) many dishwashers still feed too much calcareous water, the citrate is intensified by the lime-binding properties of sodium gluconate, carboxymethyl inulin, and tetrasodium glutamate diacetate. Sodium gluconate is the sodium salt of gluconic acids naturally occurring in honey and fruits. Carboxymethyl inulin is manufactured by the carboxy methylation of starch inulin extracted from chicory roots. Tetrasodium glutamate diacetate consists 86% of renewable natural products containing starch and sugar.


Technical data

1 tablet is about 20 g (0.7 oz)

pH value:  20 °C, 5 g / litre  H₂O

68 °F, 0.18 oz / 34 fl oz US H₂O

approx. 10.5–11


Keep tightly closed and in a dry place.



Silicates and sodium carbonate are mineral substances which in nature need no further decomposition. Citrate, a substance present in plants, animals and humans, is completely degraded by nature within 2 to 3 days, thanks to microorganisms naturally present. Sodium percarbonate, during the washing and bleaching process, disintegrates into mineral soda, water, and oxygen, thus leaving the dishwasher in a state which requires no further degradation; i.e. bleaching and degradation are one and the same process. In the manufacturing process of sugar surfactants and sulphated castor oil, constituents are extracted from the plant-based raw materials starch, sugar and fat, but remaining intact in their natural structure. This makes it quite easy for the microorganisms to 100% degrade these surfactants very rapidly. Citrate, carboxymethyl inulin, tetrasodium glutamate diacetate, sodium gluconate, sugar surfactants, and sulphated castor oil are classified as being readily biodegradable according to OECD. 


Suitable for septic tanks and filtration systems.


NCP (Nature Care Product)

CSE (Certified Sustainable Economics)

Vegan Society



Tablet sheet: PE

Cardboard box: 100% recycling material 

Outer carton: 100% recycling material


Product Pictures  Tablets for Dishwashers




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