Get Certified in Specialty Gas Filling

Develop skill sets through both classroom and hands-on instruction

The programs focus on all aspects of specialty gas filling and testing. Both Basic Gravimetric Mixture Filling and Gravimetric Mixture Courses are available this Fall. Participants in the programs can receive certification in Specialty Gas Mixing and Gas Chromatography.


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Register Today for In-Person, Hands-On Training!

Get Certified in Specialty Gas Filling at Weldcoa's Innovation Center (aka WIC), a completely functioning centralized specialty gas filling facility with analytical equipment for quality training and education.  The programs focus on all aspects of specialty gas filling and testing, developing skill sets through both classroom and hands-on instruction. Participants in the programs can receive certification in Specialty Gas Mixing and Gas Chromatography.

This training service is provided by Weldcoa and AsteRisk. Both companies have worked closely together, supporting the compressed gas industry for decades. AsteRisk’s President, Tom Badstubner, is well known in the industry as an expert in Specialty Gases and is GAWDA's FDA Food and Medical Gases and Specialty Gases Consultant.

Both courses offered this fall will be in-person unless COVID restrictions are put in place by Illinois and/or Kane county. If that were to occur, this offering will be transitioned into an on-line event.

The class was great.  Learned a lot, while still having some fun.  Seeing and hearing your innovative ideas will have us thinking for a while." Tom Klemz, Vice President of Bakers Gas and Welding Supplies, Inc.

The class wasy very useful and hands on with the type of work I deal with on a daily basis."Anthony Cyr, Analytical Chemist for Red Ball Technical Gas Services

Weldcoa University located on site at Weldcoa, offers a one-of-kind and unique learning experience. The classroom lectures coupled with the hands-on learning is beneficial to beginners and seasoned veterans alike!  The equipment and facilities, generously provided by Weldcoa, along with the expertise of the Asterisk team, make this a must-have training for anyone desiring to be competitive in the compressed gas industry.  Not only, did I receive top-notch instruction and training, but it also provided a unique networking opportunity to create relationships with other personnel from other gas companies!  If you want the best, go to Weldcoa University!Kyle Barton, Knoxville, TN Plant Manager for Holston Gases 

2021 Class Schedule

Specialty Gas Training Course - Level 1 (Basic) - Fall 2021 


  • September 13-15, 2021  Basic Gravimetric Mixture Filling
  • September 15-17, 2021 Basic Gas Chromatography

(Most attendees take both courses however it is not required)


Curriculum Details

Gravimetric Mixture Filling Course - Level 1 (Basic)

This course is designed for specialty gas mixture personnel who need the basics of making Specialty Gas mixtures. Prior lab experience is helpful but not required. This is a 2 1/2-day lecture with hands-on lab exercises.

Topics include:

  • Mixture calculations: manual and automated methods
  • Cylinder selection: CGA connections, materials, test dates, etc.
  • Pre-fill inspection: DOT requirements, cylinder damage, safety considerations, etc.
  • Cylinder preparation: general and special requirements for certain gases
  • Safety precautions: OSHA, DOT and FDA issues
  • Partial pressure fill techniques: pressure/temperature, confirmation, and compressibility adjustments
  • Gravimetric fill techniques: mother mixes, base mixes, sample bombs/loops for PPM mixes
  • Post fill procedures
  • Mixture vs. analytical ranges
  • Analytical accuracy vs. precision
  • Scale calibration
  • Low PPM mixture techniques
  • Purity considerations for critical mixtures

What is not covered: This course does not cover fuel/oxidizer mixtures, toxic/corrosive mixtures or EPA protocol mixtures. Please contact Weldcoa for additional information and schedules for these advanced application.


Gas Chromatography Course - Level 1 (Basic)

This course is designed for personnel who need to use a gas chromatograph. Prior lab experience is helpful but not required. This is a 2 1/2-day lecture with hands-on lab exercises.

Topics include:

  • Why and how GCS work
  • GC components: gas systems, sample valves, columns, detectors, electronics, etc.
  • Column selection: when to use molecular sieve, poropak, CTR, hayesep, etc.
  • Integrators: operation, programming and maintenance
  • Detectors: thermal conductivity, discharge ionization, flame ionization
  • Difficult analyses: argon in oxygen, hydrogen in helium, low ppm, etc.
  • Carrier gas options and precautions: argon, hydrogen, etc.
  • Chromatogram interpretation
  • GC parameters and their effects: column temperature/flow, detector current/temperature, sample loop size/pressure
  • Analytical tips & techniques, such as:
    • Making in-house chromatographic grade helium for GCS
    • How to avoid costly detector replacement
    • Reliable limits of detection
    • Methods to minimize instrument downtime       
    • How to save over $500.00/year on each GC

class and registration Details

Each class is two and a half days. Most students attend both classes offered in the week but this is not mandatory.


Monday and Tuesday 8:30am to 4:30pm

Wednesday 8:30am to noon (for the first class), noon to 4:30pm (for the second class)

Thursday and Friday 8:30am to 4:30pm (the ending time on Friday varies between 3pm-4:30pm depending on the class's progress that week)


A single class is $950 per attendee. If the attendee registers for both the Gravimetric Mixture Filling AND Gas Chromatography Course in the same week – each class is $900 ($1,800 total).


training location

Specialty Gas Training is hosted at Weldcoa’s full functioning lab facility called the WIC (Weldcoa Innovation Center) located in Aurora, IL. Address is 338 East Sullivan Road, Aurora IL 60505 (directly across the street from Weldcoa’s 335 East Sullivan Road, Aurora manufacturing facility)


hotel and travel Details

Attendees are responsible for their own transportation, meal and hotel costs. If you are flying in, it is recommended that you rent a vehicle to get around. Weldcoa does not provide any shuttle services to the hotels or the airport(s).  Here are a couple hotel recommendations that are approximately 5-10 minutes from Weldcoa’s facility.

Holiday Inn Express & Suites 

P: 630-896-2800 | 111 N Broadway | Aurora, IL 60505
This Holiday Inn Express & Suites is in downtown Aurora next to the popular Two Brothers Brewery. Several restaurants, as well as the casino, are within walking distance. They have just completed a significant amount of renovating and they offer a free Continental Breakfast. 

Holiday Inn Aurora-North Naperville

P: 630.806.7400 | 2424 W. Sullivan Road | Aurora, IL 60506
Some guests prefer this location over the other Holiday Inn because the Broadway Holiday Inn is near railroad tracks. 

O’Hare International Airport (ORD) and Chicago Midway International Airport (MDW) are both about the same distance from our facility (approx. 35-40 miles). Travel time is about 40-90 minutes depending on the time of day and weather conditions.

If you have further questions, please reach out to us at 


Phone: 1(630) 806-2000


Weldcoa's main administrative office and manufacturing facility is located at:

335 East Sullivan Road, Aurora, Illinois 60505 USA


Weldcoa's main administrative office and manufacturing facility is located at:

335 East Sullivan Road, Aurora, Illinois 60505


Weldcoa's WIC training lab facility is located at: 

338 East Sullivan Road, Aurora, Illinois 60505 


 If you have any questions and/or need assistance, please feel free to contact Melissa Heard, Director of Marketing for Weldcoa, at

335 East Sullivan Road
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