keep on asking

our answers to your questions

Do you have questions about keeeper products? We are always happy to answer to them. Here you can find frequently asked questions about our products and their application.

If you cannot find your question amongst our FAQs, simply contact us and place your query! We will respond to you as quickly as possible with the right answer.

Are the keeeper products food-safe?

If a keeeper product is intended for contact with food, it is labelled with a corresponding symbol ( ). Products for use with food, in particular, are subject to far-reaching and strict requirements, which we comply with. All keeeper products pose no risk to health – both for adults and children. They are free of Bisphenol A (abbreviation: BPA) and do not contain heavy metals, plasticisers or other potentially harmful substances.

Are keeeper products temperature-resistant?

All keeeper products are temperature-resistant within the specified limits of the respective product. You can find exact information and symbols on the maximum and minimum temperature (for example ) as well as on freezing suitability ( ) on the products themselves or with the respective product on our website.

Are keeeper products suitable for the microwave?

You can use a keeeper product in the microwave if its use is indicated as safe ( ). An important keeeper tip: In order to avoid overheating a keeeper product suitable for use up to 100 °C, the temperate of the food should not exceed 100 °C! It is best to heat the meal for 3 minutes at max. 400 Watts. Then stir it and heat again if necessary. Please also ensure that the lid is not closed, but rather merely placed loosely onto the container.

Are keeeper products resistant to discolourations or acidic foodstuffs?

Discolourations on keeeper products, caused by strongly-coloured foods such as carrots or red beets, generally disappear in the dishwasher. If fat-containing foods (e.g. goulash or tomato sauce) are overheated in the microwave, however, this can lead to permanent discolouration. In order to avoid overheating a keeeper product suitable for use up to 100 °C, the temperate of the food should not exceed 100 °C!

Can keeeper products be put into the dishwasher?

If the keeeper product is labelled with the appropriate symbol ( ) you are welcome to put it into the dishwasher. This symbol can generally be found on the bottom of the product. We recommend that you place our products on the upper shelf of the dishwasher.

Do keeeper products take on the smell of foodstuffs such as fish oder cheese?

keeeper products do not generally take on odours. In exceptional cases, slight odours may persist after use. In such cases, we recommend that you leave the keeeper jar open for several hours in a freezer compartment. Caution: Do not drop the keeeper jar when frozen as it may break!

Where are keeeper products manufactured?

The Stemwede location mainly processes products for the areas home and storage. We at keeeper place the highest demands on our products and continuously secure their quality with our in-house Tool Servicing. Our location in Poland is mainly responsible for the product areas kitchen and kids. In addition to storage jars and kitchen aids, colourful and practical products concerning nappy changing, bathing and safe storage are produced here. Having our own Tool Construction facilitates consistent innovation and product developments.

keep on caring

our guarantee conditions

Whether for washing or storing, cooking or baking, stowing away or transportation: Our products are there for every task. At keeeper, because we are convinced about the quality and durability of our products, we guarantee all products for 10 years. You can find our guarantee conditions below

Scope of the guarantee

keeeper guarantees perfect function and usability for an item for 10 years from the date of purchase. The guarantee exists alongside the seller’s legal warranty obligations as stipulated in the purchase agreement with the initial customer and does not affect these obligations.

In the event of a guarantee claim, we reserve the right to choose whether to repair the faulty item free of charge, replace the item with another of the same value, or to refund the payment amount. The guarantee only applies for damage to the purchased item itself. Claims for damages that do not affect the purchased item itself, and any claim to loss of profits or downtime are exempt from the guarantee. Any possible liability resulting from mandatory legal provisions are not affected.

Limitations of liability

This guarantee does not include damages caused by

  • mechanical damages due to an accident, being dropped or impact,
  • negligent or malicious destruction, fire, or
  • misuse, incorrect handling (for example: overloading, overheating, use under abnormal conditions) or by failure to observe the user instructions/instructions for use or
  • are made worse by own attempts at repair.

Guarantee duration

The guarantee is limited to a duration of 10 years from the date of purchase by the first customer. Any use of the guarantee does not result in it being extended. Any replacement parts claimed within the guarantee are guaranteed for 6 months, but not less than the current guarantee period.


Assertion of guarantee claims

A guarantee claim is to be asserted against keeeper. To do so, the claimant should send an email with photographs of the product subject to the claim and the proof of purchase showing the date of purchase and the written statement of the claimed damage to keeeper will then send the claimant an email with information about how to proceed. If the product needs to be sent in for further assessment, keeeper will pay the cost of despatch. The claimant bears the transportation risk.

keeeper keeps its word

our materials

We regularly submit our products to testing by recognised state testing institutes, in order to guarantee quality and product safety.
 You can find an overview of the symbols used for certain product characteristics here: overview of symbols.

ABS - Acrylnitrile-Butadiene-Styrene

use temperature max. 85 °C to 100 °C, resistant to oils and greases, resistance to weathering and aging, particularly suitable for consumer goods with increased surface hardness requirements


PE - Polyethylene

break-proof, silk-matt surface, can be used in temperatures from -40 °C to +80 °C, dishwasher safe


PP - Polypropylene

break-proof, dishwasher safe, high chemical resistance to, e.g., citrus fruits, high gloss surface, can be used in temperatures from -20 °C to +100 °C


PS - Polystyrene

crystal-clear, brilliant surface, shatterproof, can be used in temperatures from -20 °C to +80 °C


TPE - Thermoplastic Polyurethane Elastomers

shatter-proof, dishwasher safe, high resistance to, e.g. oil and grease resistant, very good low-temperature flexibility, pleasant surface feel, can be used in temperatures from -20 °C to +100 °C


POM - Polyoxymethylene

use temperature max. -20 °C to +100 °C, high strength, hardness and stiffness, high abrasion resistance and heat resistance, especially suitable for precision parts and products with high mechanical requirements


SAN - Styrene-acrylonitrile resin

break-proof, crystal clear, brilliant surface, dishwasher safe, chemical resistance, can be used in temperatures from -40 °C to +90 °C



heat-resistant between -40 °C and +250 °C, especially suitable for elastic products, impermeable to air and uv-resistant, high marking accuracy of surface details

SMMA - Styrene-Methyl Methacrylate

insensitive to breakage, crystal-clear, brilliant surface, dishwasher suitable, chemical resistance, use temperature from -40 °C to + 80 °C