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.

NAQULA®
Stainless steel drinking bottle

The 550 ml stainless steel drinking bottle from NAQULA® proves to be a reliable and versatile companion in everyday life and when travelling. Thanks to the double-walled design, cold drinks stay cool for up to 24 hours and hot drinks stay warm for up to 12 hours – ideal for the office, sports and outdoors. Made from high-quality 18/8 stainless steel, the bottle is odourless, tasteless and BPA-free. Its minimalist design with clear lines and slim shape cuts a fine figure in any environment. The silicone base ensures a non-slip grip and prevents scratches and noise when the bottle is put down. A particularly positive feature was that the bottle is suitable for carbonated drinks. In the test, the bottle held the carbon dioxide reliably and was absolutely leak-proof. This makes it particularly practical for everyday use. The only point of criticism is that it is not dishwasher-safe, which means it has to be cleaned by hand.

Overall, the NAQULA stainless steel drinking bottle combines high functionality, stylish design and environmentally friendly properties, making it a recommended choice for a wide range of applications.

  • High-quality 18/8 stainless steel
  • Attractive minimalist design
  • Leak-proof
  • Silicone base prevents scratches and ensures a non-slip grip
  • Use of plastic film
  • Not dishwasher safe

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

Compact product packaging, plastic film inside can be dispensed with

80

Points

Package contents & scope

Complete

100

Points

Instructions for use

Product is self-explanatory

100

Points

TOTAL

95

Points

Weighting: 20%
*Themaximum score is 100 points

The packaging of the drinking bottle leaves a positive impression. The shipping carton is made exclusively from recyclable and renewable materials such as paper and cardboard and is kept compact, which helps to minimise waste and avoids unnecessary packaging material. However, the use of plastic film inside could be avoided and it would be desirable to use recyclable material. The contents of the packaging are complete and in good condition. Instructions for use are not required as the product is self-explanatory.

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 minimalist design, available in black, grey and white

100

Points

Processing

Very good workmanship

100

Points

Stability

Very stable

100

Points

Sustainability of the product

Reusable stainless steel drinking bottle, BPA-free

100

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

The first impression of the stainless steel drinking bottle is positive. The look is simple and elegant, the minimalist design in white is appealing. The bottle is available in black, grey and white. The high-quality stainless steel body and the well-made screw cap in particular convey a high-quality impression. The absence of visible seams and edges emphasises the high-quality workmanship. In terms of stability, the bottle proves to be robust. The 18/8 stainless steel is impact-resistant and the bottle remains undamaged even if it is dropped slightly. The screw cap guarantees leakproofness. The bottle is sustainable thanks to the use of BPA-free materials, which promotes longevity and environmental friendliness. The reusability of the bottle contributes to the reduction of single-use plastic.

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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Ergonomics and handling

Extremely comfortable, non-slip silicone base provides grip and protects against scratches

100

Points

Tightness

Absolutely leak-proof, even with carbonated drinks

100

Points

Thermal insulation

Good thermal insulation, cold drinks stay cool for up to 24 hours, hot drinks stay warm for up to 12 hours

80

Points

Flavour neutrality

No changes in flavour

100

Points

Cleaning

Easy to clean by hand, not dishwasher-safe

90

Points

TOTAL

94

Points

Weighting: 45%
*Themaximum score is 100 points

In our practical test, we took a closer look at the stainless steel drinking bottle from NAQULA®. In terms of ergonomics and handling, it proved to be extremely comfortable: the screw cap was easy to open and close even with wet hands. The slim design and non-slip silicone base made it comfortable to carry and ensured it stood securely without scratching. The bottle’s tightness was particularly impressive. It remained absolutely leak-proof when stored both horizontally and vertically, even with carbonated drinks. The screw cap proved to be firm and absolutely reliable. The bottle’s thermal insulation proved to be very good. Hot drinks stayed warm for up to 12 hours, cold drinks warmed up only minimally and remained pleasantly cool throughout the day. We did not notice any changes in taste due to the stainless steel construction, which ensured full enjoyment of the drinks and confirmed the flavour neutrality of the bottle. Cleaning was uncomplicated. The wide opening made it easy to clean the bottle by hand . A brush proved to be helpful for thorough cleaning, even in hard-to-reach areas. It should be noted that the bottle is not dishwasher-safe. We therefore recommend cleaning it by hand only to ensure its longevity and avoid damage.

All in all, the NAQULA® stainless steel drinking bottle offers a reliable solution for everyday use and when travelling. Its excellent ergonomics, leak-tightness and insulation make it a reliable companion in many situations.

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

Very good performance in the lower price segment

90

Points

Rating cut

Not yet listed long enough on Amazon

TOTAL

90

Points

Weighting: 15%
*Themaximum score is 100 points

At the time of testing, the product had not been listed on Amazon for long enough. Therefore, the existing reviews do not sufficiently reflect the advantages and disadvantages of the product, so this point is neglected in the evaluation.

Prices of up to €51 are charged on the Internet for equivalent products. Very affordable products are available from as little as €7.99 . The stainless steel drinking bottle 550ml from NAQULA® is therefore currently in the lower price segment with a price of €19.99. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. packaging & contents

20%

95

Points

2. product processing & appearance

20%

100

Points

3. in the practical test

45%

94

Points

4. price/performance & consumer reviews

15%

90

Points

TOTAL

95

Points

*Themaximum score is 100 points

Stainless steel drinking bottle
of the brand
NAQULA®
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
240522001
. 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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