Who Should Take This Course?
Hydrogen Sulfide (H2S) is a highly toxic gas, and training is critical for any worker who may be exposed during job activities. The level of training required depends on potential exposure:
High Exposure (at or above the Occupational Exposure Limit, or OEL): Workers need to complete this 6-Hour OSHA/ANSI H2S Certification course.
Low Exposure (below the OEL): Workers may only need awareness-level H2S training.
Additional H2S Awareness Training Options:
For workers who only need awareness-level training, Hazmat Student also offers:
Important Note:
While this H2S Certification course provides essential knowledge on hydrogen sulfide hazards, prevention, and emergency response, you may also require site-specific training in the use of protective equipment and workplace procedures. This additional instruction must be provided by your employer and tailored to your specific worksite.
Course Outline
This OSHA/ANSI H2S Certification training course consists of 10 sections, which are fully narrated and interactive. Quiz questions within each section help the student retain the knowledge needed for the final exam. Students will receive a downloadable certificate upon passing the exam, completing a brief evaluation, and verifying their identity.
| Module | |
|---|---|
| Section | Title |
| 1 | Course Overview |
| 2 | Characteristics and Hazards of H2S |
| 3 | Characteristics and Hazards of SO2 |
| 4 | Exposure Limits, Symptoms, and Effects of Exposure to H2S |
| 5 | Exposure Limits, Symptoms, and Effects of Exposure to SO2 |
| 6 | Limiting Your Exposure |
| 7 | Detection and Monitoring |
| 8 | Emergency Plans |
| 9 | Emergency Plans and First Aid |
| 10 | Employee and Employer Rights and Responsibilities |
| Course Exam | |
Course Exam
- The final exam for this course consists of 20 questions, which are randomly compiled from a large pool of possible questions.
- A 70% or better score is needed in order to pass the final exam. If a student does not pass, they may re-review information in the sections as necessary, and retake the test as many times as needed in order to pass.
Course Format
This is a 100% online, fully narrated course which students complete within our state-of-the-art Online Training System (OTS). The training is self-paced and available 24/7.
This 6-Hour H2S training online for hydrogen sulfide certification includes up-to-date, high quality training created with your safety and learning as our top priority. The course features interactive training, which combines audio and visual elements for maximum retention. The course is completed entirely online using a computer with an internet connection and is available 24/7. A downloadable student manual including the course material is provided for student reference and note-taking. For your convenience, the course can be completed over time, and your progress will be saved to the last section completed. Students are given 6 months to complete the course after enrollment. We are so certain you will be satisfied with your experience, that we offer a 100% Money Back Guarantee*.
Once the course is completed, you will immediately be able to download, save or print your Course Completion Certificate which is provided in PDF format. We also offer the option to be mailed a PVC credit card style Wallet ID Card with optional photo, showing training course completion. If selected during enrollment, this ID Card option costs an additional $5.00, and the card will be mailed within 24 hours of course completion.
Accreditation
This 6-hour OSHA/ANSI Hydrogen Sulfide (H2S) Certification Online course is designed to meet Federal and State OSHA training requirements and aligns with the H2S Certification-level standards outlined in ANSI/ASSP Z390.1, Accepted Practices for Hydrogen Sulfide (H2S) Training Programs.
H2S Certification of Training
Once the course is completed within our Online Training System (OTS), you will immediately be able to download, save or print your Hydrogen Sulfide Awareness H2S Certificate of Course Completion which is provided in PDF format. We also offer the option to be mailed a PVC credit card style Wallet ID Card with optional photo, showing training course completion. If selected during enrollment, this ID Card option costs an additional $5.00, and the card will be mailed within 24 hours of course completion.
Course Objectives
The objectives of this 6-hour OSHA/ANSI Hydrogen Sulfide (H2S) Certification Online course are to meet Federal OSHA training requirements under 29 CFR 1910 and 1926, along with applicable State OSHA regulations. The course also covers the H2S Certification objectives outlined in ANSI/ASSP Z390.1, Accepted Practices for Hydrogen Sulfide Training Programs, and addresses relevant standards under Canada WHMIS and CCOHS.
Learning Objectives
By the end of this 6-hour OSHA/ANSI H2S Certification Online course, students will be able to:
Describe the hazards of exposure to hydrogen sulfide (H2S) and sulfur dioxide (SO₂).
Recognize the signs and symptoms of exposure to H2S and SO₂.
Identify industries and job sites where hydrogen sulfide and sulfur dioxide are commonly found.
Explain how employers detect H2S hazards and implement measures to limit worker exposure.
Understand the purpose and key elements of an H2S Contingency Plan.
Describe employer responsibilities for workplace controls, safety programs, and required H2S training.
The HazMat Student Advantage
- Fully Narrated, High Quality Training
- 24/7, Easy-to-Use Online Interface
- Includes Audio, Text & Photos
- Self-Paced with Saved Progress
- Interactive Quizzes for Retention
- Detailed Student Manual (PDF)
- Take Up to 6 Months to Complete
- Excellent Customer Support
- Mobile Device Friendly Course*
- 100% Money Back Guarantee*
- Course Certificate & Optional ID Card
- Volume Pricing Available
Additional Information
For additional information on Hydrogen Sulfide (H2S), please visit OSHA’s webpage regarding this highly flammable and toxic gas.
- Health and Safety Hazards of Hydrogen Sulfide
- Hydrogen Sulfide’s Presence in the Workplace
- Methods to Evaluate and Control Exposure to H2S
- Hydrogen Sulfide’s Related OSHA Standards
- Industry Specific H2S Resources
Additional Training
Please note that this safety course provides valuable H2S training information which applies to workers who may be exposed to Hydrogen Sulfide. This course is not meant to replace company-specific training provided by your employer on equipment use and procedures for your particular work environment. You must be trained by your employer on the hazards, equipment, engineering and administrative controls, safe work practices and emergency plans specific to your role and workplace.
In ALL situations, employers are required to ensure their employees are adequately trained to do their job.
Course Options
Chemical Specific Online Courses
- Acrylonitrile Awareness Training
- Asbestos Awareness Training
- Benzene Awareness for General Industry and Construction Training
- 1,3-Butadiene Awareness Training
- Cadmium Awareness for Construction Training
- Cadmium Awareness for General Industry Training
- Chromium (VI) Awareness Training
- Ethylene Oxide Awareness Training
- Formaldehyde Awareness Training
- OSHA H2S Awareness Training (2 Hours)
- OSHA/ANSI H2S Hydrogen Sulfide Awareness Training (4-Hour)
- OSHA/ANSI H2S Hydrogen Sulfide Certification Training (6-Hour)
- Inorganic Arsenic Awareness for General Industry and Construction Training
- Lead Awareness Training
- Methylene Chloride Awareness Training
- Silica Awareness for Construction Training
- Vinyl Chloride Awareness Training
Frequently Asked Questions
Who should take this H₂S Certification course?
This course is designed for workers who may be exposed to hydrogen sulfide (H₂S) at or above the Occupational Exposure Limit (OEL). It is designed to meet Certification-level requirements under ANSI/ASSP Z390.1 and helps meet Federal and State OSHA standards for H₂S safety training.
How is this 6-hour H₂S Certification different from the 2- and 4-hour Awareness courses?
The 2- and 4-hour awareness-level courses are for workers with potential low-level exposure to H₂S.
The 6-hour OSHA/ANSI H₂S Certification course is for workers at higher exposure levels who need training to meet the Certification-level standard in ANSI/ASSP Z390.1, including Sulfur Dioxide (SO₂) awareness and expanded emergency response instruction.
How long will I have to complete the course?
You’ll have six months from your enrollment date to complete the training and pass the final exam. The course is self-paced and fully online, so you can log in and out anytime. Your progress is automatically saved.
Is this course OSHA and ANSI compliant?
This H₂S Certification course was developed to comply with OSHA 29 CFR 1910 and 1926, applicable State OSHA standards, and the Certification-level training requirements outlined in ANSI/ASSP Z390.1 – Accepted Practices for Hydrogen Sulfide Training Programs.
Does the course include Sulfur Dioxide (SO₂) training?
Yes. To meet the ANSI/ASSP Z390.1 Certification-level standard, this course includes instruction on potential exposures to Sulfur Dioxide (SO₂) in addition to hydrogen sulfide hazards.
What topics are covered in the H₂S Certification course?
Topics include H₂S properties and characteristics, exposure limits and health effects, detection and monitoring equipment, safe work procedures, emergency response, and more.
Will I receive a certificate after completing the course?
Yes. After you pass the final exam, you can immediately download and print your Certificate of Completion. The certificate verifies successful completion of OSHA- and ANSI-compliant H₂S Certification training and is widely accepted across oil and gas, wastewater, and industrial operations.
If you’re unsure whether this course meets your company’s specific training requirements, it’s always a good idea to verify acceptance with your employer or site safety manager before enrolling.
Does this course include hands-on or field training?
No. This is an online course designed to meet the classroom portion of the ANSI/ASSP Z390.1 Certification standard. Employers must provide site-specific or hands-on training (such as respirator fit testing and gas-detection practice) as required by their company safety program.
Can I take this course on a mobile device?
Yes. This course is HTML5 mobile-ready, allowing you to complete the training on a desktop, laptop, tablet, or smartphone. You can start the course on one device and continue on another without losing progress. Your work is automatically saved through our Learning Management System. While most mobile browsers are supported, tablets generally provide the best experience due to their larger screen size and easier navigation.
Is group or corporate enrollment available?
Yes. Corporate accounts and advance purchase volume pricing are available for multiple student enrollments. Employers can track progress, download certificates, and manage team compliance through a single portal.
