What does a spare part number look like?
A genuine BSH part number always has 8 digits and usually starts with 00, 1 or 2.
Examples: 00611332, 17007585, 20007165Item added to your cart
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This liquid descaler for coffee machines is an original cleaning accessory with the code 00311968. It is intended for selected coffee machines, automatic coffee machines, kettles, steam ovens, steam combination ovens and other Bosch, Siemens, Gaggenau, Neff and other compatible water-operated appliances. The descaler is used to remove limescale from the appliance's internal water pathways and helps maintain proper function, water flow and the quality of prepared beverages or steam.
The liquid descaler is used for regular maintenance of appliances in which water is heated, pumped or transported. Limescale can gradually build up in the heating system, pump, hoses, nozzles, steam system and other internal parts of the appliance. Regular descaling helps restore water flow, supports correct heating temperature, reduces noise and contributes to a longer appliance lifespan.
You will typically need to use this product in the following situations:
This original cleaning accessory Bosch / Siemens is manufactured to meet the manufacturer's requirements for compatible appliances. As a result:
Part 00311968 is listed in spare parts catalogs as tekutý odvápňovač, univerzální odvápňovač, odvápňovač do kávovaru, odstraňovač vodního kamene, odvápňovací prostředek, liquid descaler, descaling liquid, descaler, Entkalker or Flüssigentkalker. Some catalogs state a volume of 500 ml and use for up to approximately 5 descaling cycles. The part may also be referenced with the related number 00311680 or the shortened code 311968.
When maintaining a coffee machine we also recommend checking the condition of the brew unit, water filter, seals, nozzle, milk frothers, water tank, drip tray and hoses. For some appliances, separate cleaning tablets for coffee oils, water filters or milk system cleaners are also used for routine maintenance. If the issue is caused by a mechanical fault, a clogged filter, a defective pump or a damaged heating system, descaling alone may not fully resolve the problem.
Use the liquid descaler according to the instructions for the specific appliance and follow the recommended dosing. For steam ovens, some manuals and catalogs recommend preparing the descaling solution at a ratio of 1 : 2, for example 200 ml descaler and 400 ml water, but the exact ratio always depends on the specific model. Do not use the product together with other cleaning chemicals and perform a rinse cycle according to the instructions after descaling.
This product does not require installation like a standard spare part. The descaler is used as part of the appliance's descaling program or according to the instructions in the user manual. Before use, ensure the water tank is clean, the appliance is ready for the descaling cycle and you have a suitable container to catch the rinse water. After the program completes, check that no descaling solution residues remain in the appliance.
Before ordering, please verify the suitability of this liquid descaler for the specific model of your coffee machine, steam oven, kettle or other appliance. For Bosch, Siemens, Gaggenau and Neff appliances we recommend checking by the model designation E-Nr., as the recommended maintenance type, dosing, descaling program and compatibility of cleaning agents may vary between models.
00311968 Liquid descaler for coffee machine is an original spare part for appliances of the BSH group – Bosch, Siemens, Gaggenau, Constructa, Neff and Balay.
The product is compatible with 5777 appliances, for example: 3HA4031X3/01, 3HA4031X3/95, 3HA4031X3/A6, 3HA4031X3/B3, 3HA4031X3/B8, 3HA4121G3/95, 3HA4121G3/A3, 3HA4121G3/A6, 3HA4121G3/B1, 3HA4121G3/B8.
Available goods are usually delivered by the next business day. Goods available from the supplier are dispatched according to current availability. You will see the exact delivery date in the cart.
You can return unused goods within the statutory period. Before returning an item, please contact us so we can help verify the correct procedure and any part compatibility.

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Choose an option based on whether you have the exact appliance model.
We’ll show you where the rating plate with the E-Nr. is usually located.
To find the correct part, you need the E-Nr. from the rating plate. For a safe selection, we therefore recommend searching by this marking.
The image shows the usual locations of the rating plate.
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A genuine BSH part number always has 8 digits and usually starts with 00, 1 or 2.
Examples: 00611332, 17007585, 20007165Plastic and metal components often carry a mould number, material number or another production marking. It may not be the order number. The same marking may be used on several different spare parts.
It may be a mould number, material number or production marking stamped directly on the component. We are gradually adding these numbers to our search.
We could not find the entered marking among the products or information stored in our shop.
In this case, we recommend searching by the exact appliance model shown on the rating plate. This lets us display parts intended specifically for your appliance.
A model range such as MUM 4, MUM 5, EQ.6, EQ.8, EcoSilence, Serie 6, Serie 7, iQ500 or iQ700 is unfortunately not a unique appliance identifier.
A complete E-Nr. includes a service index with a slash before the final two characters. For example: B1WTV3000A/01, WAN20030IX/34 or KIV22470/01.
Even a different service index may mean a different appliance version and different compatibility for some parts.
You can also search using an incomplete E-Nr. Without the complete marking, however, we cannot guarantee full certainty of product compatibility.
You can replace up to 3 unreadable characters individually with a ?. Each question mark represents exactly one character. The more question marks you use, the more possible results may be displayed.
Please check that you copied the complete model from the appliance rating plate without any errors.
Our database contains appliances from Bosch, Siemens, Neff, Gaggenau, Constructa, Balay, Profilo, Koenic, Kenmore, IKEA, Imperial, Pitsos, Thermador, Viva, Lynx, Zelmer, Junkers, Novamatic, Blaupunkt, Ufesa, Coldex, Lord, Riedel, Dimplex, Solitaire and Tecline.
Send us the appliance marking. We’ll check why the model cannot be found in our database.
First, try to find at least part of the model marking using one of the following options.
Without the exact E-Nr., we unfortunately cannot reliably find the correct product for a specific appliance. The same model range may exist in several versions and use different parts.
A marking without the slash is incomplete, but it can still significantly narrow down the selection. We can usually use it to find one to three possible versions of the required part.
You can replace up to 3 unreadable characters individually with a ?. Each question mark represents exactly one character. The more question marks you use, the more possible results may be displayed.
Choosing by name, appearance or category is only approximate. Without checking the E-Nr., there is a high risk of ordering an incompatible part.