Extreme Dishwasher Test (Mug Comparison)

[subli]

wind proof things are not tested outside on football field. they are tested in wind machine with 100's time stronger winds. this same with sea proof things. water for tests contain much more salt then in real sea condition. Alse when trainers are tested they are bend millions times! 100's times per minute. to check if they will survive 2 year standard usage.
I hope this prove the point a little that 6mc in dishwasher is not possible in reality to test mugs.
I am glad somone carry on wit this test as i think if mug will survive such a condition that is simillar to dishwaher then I am happy o use it.

thank you

PAul

Hi Paul

I see where you're coming from, but I'm not talking about it being extreme -yes, wind tunnel tests, trainer tests etc., are all extreme, but the point is they all mimic the scenario they're testing - so if the test is to be labelled a dishwasher test, it needs to be done in a dishwasher. Being boiled in a pan of water is quite different to a dishwasher cycle.

Thanks

Steve
www.subli.co.uk

[smitch6]

wow thats certainly opened my eyes esp as i use orca
i do have a sample coming from coral
but got put off the other mugs due to the white spot issue, never had a spot with orca
has anyone had any white spot probs with corals mugs yet?

[Justin]

These tests are certainly very interesting and do have validity. My thoughts on it are that whilst the dishwasher does reach a high temperature, the original test states that this is for a very short period. What effect does 1 hour have on the coating of the mugs, does it soften and therefore stay soft for the full hour, whereas in a dishwasher it softens for a short while and is then allowed to gradually cool? Just asking the question really.

A few years ago I contacted all mug suppliers and ran dishwasher tests on all that were supplied. This made for a very interesting read, not particular relevant today so I won't go into much detail.

I have been asked to conduct dishwasher long-term tests for suppliers so I'm considering this at the moment.

Regarding Pauls comments....I don't think you can really compare these tests. For example, seaworthiness tests may appear to be over extreme but allow for freak conditions and if human life is at risk then these extremes should be taken. The trainer tests etc. are worthwhile because they emulate the continued bending, stretching and so on. This always reminds me of those robots you see in Ikea....no, not working on the tills! just joking The ones that open and shut cupboard doors a billion times and bounce on the bed to emulate the once a year celebrations that I look forward to........

[mastercueman]

The ones that open and sh*t cupboard doors a billion times.

Now that sounds painful and not a test i'd like to try!

[Justin]

Oh dear, what a keyboard slip that was! If you missed it I've changed it....but you can work out what I put!

[smitch6]

i read it before you edited it made me laugh and brought tears to my eyes rofl

[subli]

You're right in that it's more accurate to call it a "boiling water in saucepan with dishwasher tablet test". However, I chose the shortened phrase because it uses a dishwasher tablet and hot water, which is also what a dishwasher uses.

Yes a dishwasher uses a dishwasher tablet & water - but that's really where the similarity ends. In this test you're boiling mugs immersed in water, it's just not the same process. I'm not saying that there is no point to this test, but what I'm saying is that it's not a dishwasher test, it's a boil in a pan test. If it's done scientifically, then it could show how well the coating reacts to being boiled in a pan of water, which may be of some interest, but it doesn't show how the mugs will react to dishwasher cycles.

The top of the print was above the surface of the water, and not all were equally above the water, so it's important not to look solely at the sky. You're right in that the sky looks darker on the Orca mug, but I believe that much to do with the colour washing out. I don't know how best to describe it but it seems as though the Orca has lost more "yellow" than anything else. The yellow tinge to Santa's beard has gone. The vibrant two-tone red of the sleigh is a single slightly-purple red. The browns of the reindeer and the greens of the trees, are more of a reddish brown and reddish green. This may account for the sky seeming to be darker on the Orca mug.

You're talking about the browns of the reindeer and the greens of the trees - but these are only printed on the Orca, they're not on the other two mugs as you have not used the same image, and they're not on the control mug either (at least not visible on the photo) so how can you properly compare?

I have no problem at all with the idea of the test - and the fact that it was not done in a scientific manner as it was just for your own confidence in the products you're testing - but you've then published the results, and your conclusions, on a popular forum, and I feel that if you were going to do this you really should have carried it out a lot more scientifically, same amount of water, same print on each mug, and labelled it as a pan of water test, rather than a dishwasher test. Boiling a mug in a pan of water for an hour cannot possibly be used as a reliable method for gauging how colour fast a mug will be with multiple dishwasher cycles, as being put in a pan of water and boiled is not the same as a dishwasher cycle.

The Orca mug isn't bad, and I certainly don't regret using them for the last year, but it is noticeably different to the Coralgraph and RN mugs. I would still conclude that the Orca is a remarkable "budget dishwasher mug".

It isn't noticeably different, due mainly to the fact that we're not comparing the same image on each mug. Even if it does, if you're using this test to find out how dishwasher safe a mug is, conclusions drawn from this pan test cannot tell us which coating is better for dishwashers, since being boiled in a pan of water for an hour is distinctly different to undergoing a number of dishwasher cycles over a period of time.

My test has done nothing except confirm that while also acknowledging that the Coralgraph mug is at least on a par with RN, if not slightly better.

I'm sorry JSR but the test hasn't confirmed anything as far as I can see. You say that you used different amounts of water in each test, you have tested different images, you've used the same control mug for each test which is the same image as on the RN & Coralgraph mug but a different image on the Orca - you're drawing conclusions about colour loss / change from images which are only visible on one of the mugs & isn't even visible on the control - and, the main issue here is that it's purporting to be a dishwasher test, and there is no dishwasher involved. If you really want to test mugs for dishwasher safeness, then you would have to use a dishwasher. I understand that this would be time consuming, but to do an hour test in a saucepan instead and call it a dishwasher test, I really don't think is correct.


Thanks

Steve
www.subli.co.uk

[SciArtImages]

An interesting experiment, but as a scientist I would suggest that it is quite flawed. I may have skimmed some of it, but my opinion is that it unfairly compares mugs (I use one of the brands here, but am not at all biased).

1. An unspecified control mug is used - was this already brighter than the other mugs were before they were boiled?
2. The control mug images appear to differ slightly even between the close-up panels - could this accentuate any boiled differences?
3. As above, a different area of the mug is shown.
4. Does pre-pressing a mug with a different image affect the durability of the finish?
5. Really, to measure colour intensity, a proper scan should be carried out, not just a pic under the 'same' lighting.

I'm sure I will think of more!
And I have to say if I were a supplier, I would be very angry about such an incomplete test being used to judge this.

Just my opinion,

Neil.

[Justin]

I've been asked by the author of this thread to remove.