EMD PTE2.3.2 - App Store

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. Our app is the must-have of digital periodic tables. Get informed with our mobile reference work, any time, with ease, offline and in detail, in the usual straightforward, user-friendly way.

Download now free of charge and start experimenting.

New features in the latest version:
- Additional translations: Chinese (simplified), Portuguese, and Russian.
- Users can now change the language directly in the app
- New function for direct comparison of two elements
- A separate keypad for the molar mass calculator makes formulas easier to enter
- Headline and breadcrumbs added for improved orientation
- Filtering option and optimized usability for the ranking list of properties
- Update of element master data
- Update to current operating system versions
- Improved touch support for diagrams
- Museum mode

All existing features:
- 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. Calculate molar mass simply and quickly.
- Offline use. No Internet needed. All contents in one app.
- Streamlined handling of access rights.
- Interactive operation: smart operating elements and numerous selection options.
- Variety of languages: German, English, French and Spanish.

Version History iOS optimization - stability and performance updates for new ones
Operating system version. 2.3.2 02/21/2025 New features in the latest version:
- Additional translations: Chinese (simplified), Portuguese, and Russian.
- Users can now change the language directly in the app
- New function for direct comparison of two elements
- A separate keypad for the molar mass calculator makes formulas easier to enter
- Headline and breadcrumbs added for improved orientation
- Filtering option and optimized usability for the ranking list of properties
- Update of element master data
- Update to current operating system versions
- Improved touch support for diagrams
- Museum mode 2.3.1 05/06/2024 iOS optimization - Stability and performance update to new operating systems 2.2.0 02/15/2019 - 350 years celebration update - new content
- Stability and performance update to new operating systems 2.1.0 06/21/2018 Thank you all for your extensive feedback in the brief period of time since our update – both in-store and via email.

We take any feedback seriously and therefore promptly provide our next update:
- Corrected the problem with Mineral Hardness
- Integrated new element data

We really appreciate your suggestions to help and improve our app! 2.0.2 03/21/2016 Thank you again for your valuable feedback over the last few weeks. We are continuing to work on improving our app.
Since the last update we have made the following additions and modifications:
- Changed the menu colours
- Improved the keys in the views
- Added links to the glossary (e.g. from the Atomic Properties view)
- Navigation between elements by finger swiping in the Element Details, in the Periodic Table at the top left 2.0.1 02/02/2016 Now fundamentally new: colors and logo

Our PSE App is getting a new look. After this update, the app will be appearing in the colors and shapes of our new corporate design. Inspired by the colorful and multifaceted shapes seen under a microscope, the log and colors now follow the concept of a vibrant science and technology company. 2.0.0 11/23/2015 - Language bugfix: Default language of the application is set to English. 1.8.1 03/16/2015 - iPhone 5 Display Support - iPad Retina Display Support - Minor Bugfixes 1.8.0 07/23/2013 The enlargement of the App shows selected content of the recruiting website come2merck. Candidates can find career information, watch employee videos, learn about current events as well as job offers at Merck. 1.7.0 04/11/2012 ★ Hotfix 1.6.1 for splash screen crash issue
// Fixes a bug that caused trouble on devices running iOS 3.1.x (please report any issues to apps@merckgroup.com)

★ NEW: Classroom presentation mode via TV-out support
// Chemicals classes in a new dimension: connect your iPhone or iPad to any projector, monitor or TV and enjoy the EMD PTE on the big screen. TV-out support can be activated in the application settings (requires Apple iPad dock connector to VGA adapter for iPad, iPhone 4 or iPod touch 4G).

★ NEW: Integrated molar mass calculator
// This practical tool is going to be your most valuable helper with many stoichiometric chemical reactions where molar mass is of importance. No more time-consuming searches through tables and error-prone manual calculations!

★ NEW: °Fahrenheit / °Celsius switch in the applications settings
// New application settings switch: °Celsius and °Fahrenheit (Default: Fahrenheit for the US and Canada).

★ Other included updates
// Prominent display of the relative atomic mass
// Integration of a museum mode (special feature for exhibitions to deactivate external links)
// Minor corrections
// Performance improvements 1.6.1 02/08/2011 ★ NEW: Classroom presentation mode via TV-out support
// Chemicals classes in a new dimension: connect your iPhone or iPad to any projector, monitor or TV and enjoy the EMD PTE on the big screen. TV-out support can be activated in the application settings (requires Apple iPad dock connector to VGA adapter for iPad, iPhone 4 or iPod touch 4G).

★ NEW: Integrated molar mass calculator
// This practical tool is going to be your most valuable helper with many stoichiometric chemical reactions where molar mass is of importance. No more time-consuming searches through tables and error-prone manual calculations!

★ NEW: °Fahrenheit / °Celsius switch in the applications settings
// New application settings switch: °Celsius and °Fahrenheit (Default: Fahrenheit for the US and Canada).

★ Further updates
// Prominent display of the relative atomic mass
// Integration of a museum mode (special feature for exhibitions to deactivate external links)
// Minor corrections
// Performance improvements 1.6.0 01/31/2011 - Multitasking support for iOS4+
- Support of retina displays 1.1.1 10/21/2010 1.1.0 06/21/2010