About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Johans®
Glasses and display cloth

The Johans® glasses and display cloth has been specially developed to gently and thoroughly clean sensitive surfaces such as glasses, smartphones, tablets, cameras and much more. With a size of 30×30 cm and high-quality microfibre, it promises streak-free and residue-free cleaning. The cloth is characterised by its high absorbency and durability , which makes it particularly long-lasting . The advantages include excellent cleaning performance and versatility of use. The disadvantage, however, is that discolouration can occur with certain designs.

  • Hygienically clean
  • Optimum size
  • Functional cloth
  • Large selection of designs
  • Priced higher
  • Use of plastic

The first impression

Packaging and contents

Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

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Product protection

Carton is sturdy, product sufficiently protected

100

Points

Sustainability Packaging

Unnecessary packaging waste has been avoided, the plastic film protects the product components

80

Points

Package contents & scope

1 microfibre cloth XXL 30x30cm

100

Points

Instructions for use

Written in German, easy to understand

100

Points

TOTAL

95

Points

Weighting: 20%
*Themaximum score is 100 points

The sturdy cardboard envelope and careful packaging ensure safe transport and protect the product from damage.
The compact packaging saves space and makes shipping more efficient. However, the manufacturer could replace the single plastic film used with more environmentally friendly materials to further minimise the environmental impact.
The printed instructions for use are written in understandable German , which makes the product easier to handle and use. This contributes to user-friendliness and ensures that consumers can use the microfibre cloth without any problems.
The contents of the pack leave nothing to be desired and offer everything needed for perfect spectacle and display care.

The first time in your hand

Product processing and appearance

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

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Visual appearance

Attractive design

100

Points

Processing

High quality

100

Points

Stability

Very stable

100

Points

Sustainability of the product

No details, but use of high-quality materials

80

Points

TOTAL

95

Points

Weighting: 20%
*Themaximum score is 100 points

The glasses and display cloth from Johans® impresses at first glance with its attractive design, which cuts a fine figure in any household. But it’s not just the exterior that counts – the inner values are also impressive. The workmanship of the cloth is of the highest quality and fulfils professional requirements. The cloth is extremely hard-wearing and masters the requirements of a wide range of cleaning tasks with ease. The use of high-quality materials not only contributes to the longevity of the product, but also demonstrates the manufacturer’s high quality standards.
Overall, the glasses and display cloth from Johans® is a product that is not only visually impressive, but also scores highly in terms of workmanship and stability. The cloth is available in many different designs and also as a set . Despite the lack of detailed information on sustainability, the use of high-quality materials demonstrates a certain environmental awareness on the part of the manufacturer. This makes the cloth an attractive option for consumers looking for a reliable and attractive cleaning product.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

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Lens cleaning

Everything completely removed

100

Points

Cleaning mobile phone display

Complete cleaning

100

Points

Freedom from stripes

No streaking

100

Points

Size and handling

Ideal size

100

Points

Cleaning effectiveness

Very good

100

Points

TOTAL

100

Points

Weighting: 45%
*Themaximum score is 100 points

The Johans® glasses and display cloth impresses with its outstanding cleaning performance. It reliably removes all fingerprints and dust particles from spectacle lenses and leaves clear lenses without residue, even in direct light. The cloth also shows its strength on mobile phone displays and computer screens by completely removing all dirt and leaving a clear, streak-free screen.

The size of 30×30 cm is ideal as the cloth sits comfortably in the hand and does not slip. This ergonomic design ensures easy handling and a high level of user-friendliness.
The dry cleaning function is also impressive, as no dust particles or crumbs are visible after cleaning. The surface looks absolutely clear and clean.

The high-quality microfibres of the cloth are particularly soft and hard-wearing, which is supported by the stitched edges and the high grammage. These properties make the cloth a durable and reliable everyday companion .
Overall, the Johans® glasses and display cloth lives up to its promise and impresses with its high quality and effectiveness.
In our practical test, we were able to confirm that the cleaning results on spectacle lenses and displays were very good and left no streaks or residue behind.

Test plan of the Prüfengel Institute

You can find a detailed insight into the evaluation criteria of the practical part of the test and the distribution of points here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Price/performance ratio

and ratings from consumers

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

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Price / performance ratio

Medium

80

Points

Rating cut

4.7 out of 5.0 on Amazon

85

Points

TOTAL

83

Points

Weighting: 15%
*Themaximum score is 100 points

On the Amazon platform, consumers rate the Johans® glasses and display cloth with an average of 4.7 stars. One common complaint is that discolouration can occur with some designs. Many customers like the fact that the cloth is a pleasant size and soft and is particularly effective for cleaning.

Prices of up to €14.99 are charged on the Internet for equivalent products. Very cheap products are available from as little as €9.99 . The glasses and display cloth from Johans® is therefore currently in the middle price segment with a price of €12.99. For the quality and performance received, the price-performance ratio is average.

Overall result

1. packaging & contents

20%

95

Points

2. product processing & appearance

20%

95

Points

3. in the practical test

45%

100

Points

4. price/performance & consumer reviews

15%

83

Points

TOTAL

95

Points

*Themaximum score is 100 points

Glasses and display cloth
of the brand
Johans®
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
06/24
and is stored in our database under the licence number
240607002
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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