UL’s free HazLoc mobile App supports hazardous locations (explosive atmospheres) industries around the world. These industries include oil & gas, chemical, agricultural, pharmaceuticals, offshore, and mining applications. Whether you are a designer, manufacturer, distributor, importer, end-user or inspection & regulatory authority, this App provides a comprehensive source of technical expertise at your fingertips.

The App incorporates the following:

• “Select Language” feature presents all of the below features and content in six languages (English; Chinese, Simplified; Chinese, Traditional; German; Portuguese; and Spanish).

• “HazLoc Principles” feature, including…
- Types of explosive atmospheres,
- Likelihood an explosive atmosphere is present,
- Ignition-related properties of explosive atmospheres,
- Temperature classifications based on maximum surface temperatures, and protection techniques regarding electrical and non-electrical ignition sources.

• “Find Your StandardTM” feature finds the applicable standard across twelve national, regional and international installation principles based on five simple data points.

• “Markings” feature explains equipment markings required both by standards and by national or regional regulations.

• “IP and Type Ratings” feature compares ingress protection for equipment enclosures.

• “Training Workshops” feature for access to public and private training.

• “Request a Quote” & “Contact Us” features for easy access to solutions and to additional information and support.

• Push notifications with a “Stay Connected” feature to obtain region specific technical insights.

For more information on UL hazardous locations services, including training:

What’s New

Version 3.0.1

In this version we are adding support for the iPhone X and above and enhancements to the app to make user experience better.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

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So much information and all in one easy to use App! Thank you UL


Underwriters Laboratories Inc.
20.2 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
UL and the UL logo are trademarks of UL LLC © 2018 All Rights Reserved


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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