Attention Safety Unlimited Customers will be performing scheduled maintenance and upgrades tommorrow, September 2nd, at 6am EDT.
During that time our website and services will be unavailable.

Hydrogen Sulfide (H2S) Awareness ONLINE

Essential for all workers who could be exposed to H2S

About Hydrogen Sulfide Awareness Online

For students who may be exposed to the highly toxic gas Hydrogen Sulfide at the workplace, we offer a Hydrogen Sulfide Awareness training course that can be completed entirely online using a computer with an internet connection.

Training on the subject of Hydrogen Sulfide, or H2S, is essential for all oil and gas workers who could be exposed to H2S during the course of their work activities.

This training helps fulfill the training requirements of OSHA 29 CFR 1910 and 1926, ANSI Z390.1 Accepted Practices for Hydrogen Sulfide (H2S) Training Programs, and other regulatory standards.

Keep in mind that while this course provides information on the hazards of the gas, as well as ways to prevent and respond to exposure, you may require additional training in the use of company specific protective equipment and procedures. Training in equipment use and procedures should be provided by your employer and specific to your worksite.

This training comes with an optional PVC ID card with an optional Photo Wallet ID Card for an additional $5.00 if selected at the time of enrollment. To do so, just select the course that is priced at $24.95. Adding this option later will cost an additional $10.00.


Course Pricing With Optional Wallet ID Certificate Wallet ID Total Price
Hydrogen Sulfide Awareness
Yes No $19.95
Hydrogen Sulfide Awareness w/Wallet ID
Yes Yes $24.95

OSHA 10-Hour Construction Online

Looking for the OSHA 10-Hour Construction Training?

Advantages of Safety Unlimited Training

Entirely Online — Hydrogen Sulfide Awareness course is taken entirely online from any computer that has high speed internet and meets our basic system requirements. No classroom to attend, no travel required. Instructor Hotline — Interact with our instructor by using our instructor hotline or e-mail us your questions. You will typically receive a response within an hour and be guaranteed one within 24 hours.
Self-Paced — For your convenience, start and stop as often as you want in order to break the training up over a longer period. Our system will track your progress, enabling you to resume where you left off upon your next log in. Certificate & ID Card — Immediately upon completion of your Hydrogen Sulfide Awareness training, download, save or print a certificate, sample certificate. And a PVC credit card type wallet ID, with optional photo, is mailed within 24 hours, sample wallet ID card.
6 Months to Complete — Take up to six months to complete your Hydrogen Sulfide Awareness training. Group Training Enroll multiple students, take this training in a group setting, or learn about our volume discounts.
Fully Narrated — Follow right along as our narrator talks you through the entire course. 24/7 Telephone Support — Telephone support is available 24 hours per day, 7 days per week, including holidays.

Course Objectives

The objectives of the Hydrogen Sulfide Awareness Training are to meet the Federal OSHA HAZWOPER training requirements of OSHA 29 CFR 1910 and 1926, ANSI Z390.1


The objectives of this course are to inform workers who may be exposed to Hydrogen Sulfide of the following:

  • Hazards of exposure;
  • Symptoms of exposure;
  • Methods to protect themselves from exposure;
  • Methods of detecting the gas; and
  • How to respond to exposure from the gas.


This fully narrated course is built for success with interactions, exercises, and quiz questions along the way. Students must answer each quiz question in order to proceed. These questions are intended to help prepare students for the module exams.


This course has a single final exam based upon the quizzes that appear in each section.

If a student does not pass the exam the first time, they may review the material and take the exam again, and as many times as necessary in order to pass.

The Final exam consists of 20 questions randomly selected from a large pool of questions. A 70% score or better is required to pass each exam. If a student does not pass the exam the first time, they may retake the exam as many times as necessary in order to pass.


This course is divided into the 8 sections shown below. The entire course including the final exam should take approximately 2 hours to complete.

Sections Course Title
Section 1
Course Overview
Section 2
Introduction to Hydrogen Sulfide Awareness
Section 3
Symptoms and Effects
Section 4
Protecting Yourself from Exposure
Section 5
Detection and Monitoring
Section 6
Contingency Plan
Section 7
Emergency Response
Section 8
Final Exam


Sample Wallet ID

This OSHA accepted training is brought to you by a team of OSHA Certified Outreach Trainers and meets the requirements for OSHA 29 CFR 1910 and 1926, ANSI Z390.1 Accepted Practices for Hydrogen Sulfide (H2S) Training Programs. Upon completion of this course you will have immediate access to a Safety Unlimited course completion certificate you can download, save, and/or print.

In addition, an optional PVC credit-card-type wallet ID card (with optional photo) is mailed within 24 hours.

Continuing Education Credits

Per the California Department of Public Health, this course is approved for 2 Contact Hours (.2 CEUs) of Continuing Education (CE). While these CE units are intended for Registered Environmental Health Specialists (REHS) in California, they are often transferred to other accrediting bodies. Please check with your specific agency for more details and to learn if your agency accepts this course for CE credit. (Public Health Accreditation #044)

Additional Training

Workers must receive additional training, when required by OSHA standards, on the specific hazards of their job.

If you are required to use specific equipment at your job site you must be trained to use that equipment prior to using it at the job site.

If your employer utilizes specific engineering and administrative controls, safe work practices, or has specific emergency plans related to hydrogen sulfide emergencies, you must be made aware of and trained in these practices and your role in the execution of the emergency plans.

The bottom line in ALL SITUATIONS is that employers are required to ensure that their employees are adequately trained to do their job.

Frequently Asked Questions About This Course

If you do not find your question here, we do have more FAQs.

Q - In reference to the requirement for employees to have "a minimum of three days actual field experience under the direct supervision of a trained experienced supervisor," per the HAZWOPER regulation, can I do my hands-on training during that time?
A - The three-day requirement of direct supervision has nothing to do with the training requirement. This requirement is meant to ensure that newly trained employees are not sent to a work site and left unsupervised but get supervised field experience for at least three days. It is not part of their training period; it is part of their job function period.

Q - How long will this course take to complete?
A - Our courses are set up to take a specific amount of time. Some students may get through the training more quickly, while others may actually take longer to complete their training. Remember, this training should be used as an intricate tool in the context of an overall training program; it can be combined with other training throughout the year in order to meet any hour requirements needed.

Q -Do I have to finish the course in one sitting?
A - No, our courses are designed so you can start and stop as needed, allowing you to break the training up over a longer period of time. Our system will keep track of your progress, enabling you to resume where you left off upon your next login. It is important that once you start a section, you complete that section or you will need to start that section over from the beginning upon your return.

Q - Can I take the course from more than one computer?
A - Yes, you can take the online portion by signing in with your username and password from any location and computer with high-speed internet access. However, each computer does need to meet our basic system requirements for viewing our online courses.

Q - Will I receive a certificate for this course?
A - Yes, once you have completed a course, you are able to download, save or print a certificate of completion from your student account. Certificates are created in a pdf format. Users must have the latest version of Adobe Acrobat Reader before attempting to download the completion certificate.

View a sample certificate

Q - Will I receive a wallet ID card?
A - Yes, in addition to the pdf certificate, this course also comes with a laminated wallet ID card mailed from our Main Office in Southern California. Wallet ID cards are created and mailed either the same or next business day, depending on what time the course is completed. Please allow for appropriate mail time, as this may vary by location.

View a sample Wallet ID Card

If you do not find your question here, we do have more FAQs.


To learn more about our volume discounts for this training, visit our Volume Pricing page. We also offer an easy way to enroll multiple students.

Package Deals for Additional Savings

The package deals below combines this course with the 10 Hour General Industry - Online course
or with the 10 Hour Construction - Online course.

Package Pricing with 10 Hour General Industry - Online
OSHA 10 Hour General Industry - Online
Regular Price: $89.00
Hydrogen Sulfide Awareness
w/wallet ID
Regular Combined Price Special Package Price Total Package Savings
$24.95 $113.95 $99.95 $14.00
Package Pricing with 10 Hour Construction - Online
OSHA 10 Hour Construction - Online
Regular Price: $89.00
Hydrogen Sulfide Awareness
w/wallet ID
Regular Combined Price Special Package Price Total Package Savings
$24.95 $113.95 $99.95 $14.00

Mobile Version


We're excited to announce that this course is now available in HTML 5, making it more compatible with the browser on your mobile device (e.g., smartphone or tablet). Many of our existing courses are presented using Adobe Flash Player and require additional software that may not be available on your mobile device. By comparison, this course requires only the most recent version of your mobile device's web browser.

Tablet Pros and Cons

Mobile versions of this sort of training are new, but below are some Pros and Cons that we have noticed during our extensive testing.


  • No computer needed
  • Tablet mobility
  • Tablet screen graphics


  • Smartphone screens can be too small to see
  • Mobile browsers react differently than computer browsers
  • Phone calls can interrupt training

During our testing we noticed that tablets work much better than smartphones, simply due to their screen size. The newer device, the better the result. We are also aware that the course will not work on the first generation iPad, nor older Android Tablets. The best way to see how it works on your device is to click on the "DEMO COURSE" button on this page.

Growing Pains

Because this is a Beta version of our course, you may encounter some issues as we work out the kinks. If you have difficulties with this course, please contact Customer Support.

Your Mobile Browser

While HTML5 makes taking this course on mobile devices possible, not all mobile browsers are optimized for HTML5, meaning you may not have complete functionality. If you have difficulty taking this course using the browser on your mobile device, you may need to use a different browser.

Test the functionality of your browser using HTML5 and compare it to the performance of other browsers. If you find other browsers are more compatible than your own, you may want to make the switch.

NOTE The Mobile Beta only applies to the H2S Course, and NOT the OSHA 10 Hour courses, for those who purchase the package deals.

For questions about this course please Contact Safety Unlimited.

OSHA 10 Hour

Many students who take our H2S Awareness class, especially those in the oil and gas industries, are also looking to take the OSHA 10 Hour training.

AdvanceOnline Solutions Provider

Through a partnership with AdvanceOnline Solutions, Safety Unlimited, Inc. now offers the OSHA 10 Hour courses, including both the OSHA 10 Hour Construction and the OSHA 10 Hour General Industry.

Please visit the links below to learn more:

OSHA 10 Hour General Industry - Online
OSHA 10 Hour Construction - Online