Published by Merck KGaA, Darmstadt, Germany on May 7, 2024

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Why should I report an Issue with EMD PTE?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of Merck KGaA, Darmstadt, Germany to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
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About EMD PTE

1. Download now free of charge and start experimenting. • All important information about the elements: atomic number, valence electrons, oxidation state, electronegativity according to Allred-Rochow and Pauling, atomic mass, boiling point, melting point, atomic radius, density, history, discoverer, classification, crystalline structure type, electron configuration, ionization energy, isotopic composition, state of matter, hardness according to Mohs, basic state, oxidation numbers, percentage of mass in Earth’s crust, year of discovery, half-life, and much more. • Visualized element properties: atomic radius, atomic radius graphic, electronegativity (according to Allred-Rochow and Pauling), ionization energy, relative atomic mass, state of matter, ranking list of properties, discovery, classifications. • Molar mass calculator: simple entry field for chemical formulas.

2. The EMD PSE App is the ultimate tool for every friend of chemistry – whether pupil or teacher, university student or professor, amateur or expert, hobbyist or technician.

3. Get informed with our mobile reference work, any time, with ease, offline and in detail, in the usual straightforward, user-friendly way.

4. Our app is the must-have of digital periodic tables.

5. Calculate molar mass simply and quickly. • Offline use.  No Internet needed. All contents in one app. • Interactive operation: smart operating elements and numerous selection options. • Variety of languages: German, English, French, and Spanish.

EMD PTE Customer Insights

1. However, some other apps might have a larger number of chem features, this is almost always sufficient.Fantastic chemistry app that is easy to use, and has great useful information.

2. Thanks for a great app.Most PT apps are either a nice clean design lacking features /info, or on the contrary a poor design containing a high volume of useful content .

3. It would be nice to have the origin of an element's name in the description for all the elements including the transuranic ones.So far the best periodic table, and I tried a few dozen, including paid ones.

4. Great for someone starting general chemistry or just wants to brush up on concepts.Used to be my main periodic table app … until they added that nonscientific b.s. fake "element".

5. Sorry, but I have VERY little tolerance for manipulation of core scientific information.Super awesome!! This helped so much with science class!!Have been using this since 2014 and the app just keeps getting better.The most WORLDWIDEOne of my favourite apps.

6. It is simple, aesthetical, full of useful data about every element, tables, mole calculator, discovery...This app deserves 5 stars based upon content and ease of use.

7. Little errors and omissions include, for example: Tritium's isotopic abundance given as 10 - 16% and no radioactive half-life given, whereas for argon-39 it is.

8. Personally, I'd like even more information on each element, i.e., its life processes, manufacturing uses, and etc.

9. Only few periodic table apps can get close to this.

10. I particularly like the ability to custom group the elements for isolating information.

11. Great app with lots of info and no ads! But please get someone at Merck to go over the entries and correct where needed.

Steps to Troubleshoot & Fix EMD PTE Issues

1. Fix EMD PTE Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart EMD PTE: Restarting the app will resolve most errors.
  2. Update the EMD PTE App. Here is how:
    1. On Android goto PlayStore » Search for "EMD PTE" » Open EMD PTE » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for EMD PTE » click "UPDATE".
  3. Clear EMD PTE app cache: Clearing cached data will force your app to retrieve the latest data directly from EMD PTE servers.
    1. On Android, goto Settings » Apps » Select "EMD PTE" » click Storage » click "Clear Cache".
  4. Check EMD PTE app permissions. If any of these permissions required to use your device's features are disenabled, EMD PTE might not work.
  5. Uninstall and reinstall EMD PTE. If nothing else has worked, completely uninstall EMD PTE then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing EMD PTE not working


2. Fix EMD PTE Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make EMD PTE be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to EMD PTE not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, EMD PTE may not be able to connect to the Internet when running in the background.

Reported Issues