Lab Technician – Gas Chromatography

Volunteer Welding Supply Inc; Sioux Falls, Northern (SD, KY); Hybrid; USD 30,000 - 37,000; Full time

Benefits offered by this job

Unbeatable benefits package

Competitive pay

Daytime schedule

Job summary

A-OX Welding Supply, a leading supplier of industrial, medical and specialty gases, is seeking a Laboratory Technician in Sioux Falls, SD to join their team. This role offers a stable, recession-resistant industry with opportunities to learn advanced analytical techniques such as gas chromatography and gas analysis.

Qualifications include a BS in Chemistry or equivalent lab experience, hands-on instrumentation experience, and the ability to lift up to 75 pounds.

Qualifications

• Bachelor of Science in Chemistry or equivalent experience in analytical laboratory work.
• Hands-on experience with analytical instrumentation, preferably gas chromatography.
• Ability to lift 25–75 pounds.
• Ability to stand for extended periods (up to 8 hours).
• Frequent bending, stooping, crouching, reaching, grasping, and repetitive motion required.

Responsibilities

• Prepare compressed gas cylinders for filling, including inspection, cleaning, and setup.
• Fill pure and mixed gases using both manual and automated blend cell systems.
• Follow all procedures for cylinder filling, gas analysis, and workplace safety.
• Maintain accurate and complete production documentation.
• Perform daily analyses of gases to ensure compliance with required specifications.
• Operate and maintain gas chromatographs equipped with detectors.
• Interpret analytical results, troubleshoot abnormalities, and ensure proper calibration and instrument performance.
• Record, submit, and archive all analytical data and quality records.

Skills

Bachelor of Science in Chemistry

Analytical laboratory experience

Independent work

Deadline-driven

Education

Bachelor of Science in Chemistry or equivalent

Tools

Gas Chromatography

Job description

Imagine a more rewarding QC laboratory tech career where you will experience professional growth and have room to advance. Join a stable, worldwide company that offers specialty gases that are in demand regardless of the state of the economy, where you will learn valuable skills as you help businesses across the country.

A-OX Welding Supply, a leading supplier of full-range industrial, medical and specialty gases, is seeking a Laboratory Technician to join their team in Sioux Falls, SD.

If you have a Bachelor of Science in Chemistry or equivalent experience in analytical laboratory work, as well as hands‑on experience with analytical instrumentation (preferably gas chromatography), A-OX wants to hear from you!

Why Lab Technicians join the A-OX team:

• Unbeatable benefits package including medical, dental, vision, paid time off, 401k, and more!
• Competitive pay: Starting between $22 – $27/hr, based on experience.
• Consistent daytime Monday – Friday schedule, 9:00am – 5:00pm. Some overtime may be required based on business needs.
• Stable and recession-resistant industry: Our specialty gases will always be essential to the diverse group of industries we supply such as manufacturing, healthcare, and technology! You don’t have to worry about a lack of customers at any time.
• Opportunities for advancement: A-OX is always looking for key players to professionally develop and move into higher level roles.
• Experience the best of both worlds working for a local business with large company backing!

Qualifications:

• Bachelor of Science in Chemistry or equivalent experience in analytical laboratory work.
• Hands‑on experience with analytical instrumentation, preferably gas chromatography.
• Ability to lift 25–75 pounds.
• Ability to stand for extended periods (up to 8 hours).
• Frequent bending, stooping, crouching, reaching, grasping, and repetitive motion required.
• Ability to work independently, manage multiple tasks, and perform effectively under deadline pressure.
• Must be able to wear all required personal protective equipment (PPE).

Essential duties/responsibilities:

Cylinder Preparation & Gas Production

• Prepare compressed gas cylinders for filling, including inspection, cleaning, and setup.
• Fill pure and mixed gases using both manual and automated blend cell systems.
• Follow all A‑OX procedures for cylinder filling, gas analysis, and workplace safety.
• Maintain accurate and complete production documentation.

Gas Analysis & Quality Assurance

• Perform daily analyses of food‑grade, medical, and specialty gases to ensure compliance with required specifications.
• Operate and maintain gas chromatographs equipped with TCD, DID, and FID detectors.
• Interpret analytical results, troubleshoot abnormalities, and ensure proper calibration and instrument performance.
• Record, submit, and archive all analytical data and quality records.

About the Company

Since the 1950’s, A‑OX has been one of the largest, most complete distributors of industrial gas and welding supply in the upper Midwest. Today, A‑OX Welding Supply comprises 7 locations in South Dakota, North Dakota, and Iowa with a headquarters and central warehouse in Sioux Falls, SD. We have our own fleet of bulk tankers and delivery trucks that service customers across a 5‑state region including South Dakota, North Dakota, Minnesota, Iowa, and Nebraska.

A‑OX Welding Supply is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to the individual’s race, color, sex, national origin, religion, age, disability, genetic information, status as a military veteran, or any other characteristic protected by applicable law.