Professional Health and Safety Training

4-Gas Calibration
Purchase Mail-in ServiceService In-Store San Antonio

Click on a service below for the online registration form.

Mail in or In Store

4-Gas Recalibrations

4 Gas recalibration: $49.95

Shipping (if needed): $7.85

Purchase Online Click Here

Held at our office: 9200 Broadway #114, San Antonio, TX 78217

Keep your four-gas monitor calibrated using our mail-in service. The four-gas calibration uses H2S, Carbon Monoxide (CO), Natural Gas (CH4), and low oxygen levels to ensure that the four gas monitor is calibrated correctly. Always make sure to calibrate your quad 4 gas monitor in accordance with the manufacturer’s instructions.

Four gas monitor calibrations are available in-store and through the mail for $49.95 each. Mail-in calibrations include a fee of $7.85 for postage. Please e-mail us for a shipping quote for multiple monitor orders.

How it works:

In-store: Come by the store during our regular business hours. We will let you know how long it will take to calibrate the monitors and you can either wait or come back another day.


You can pay for the calibration service using the link, and then send the unit to be recalibrated to us using the mail. We will recalibrate the 4-gas monitor and send it back. If it appears that the monitor may need repair services, then we will reach out to you. Mail the monitors to our office address:

Eagleford Training

9200 Broadway St STE #114

San Antonio, TX 78217

 If you have any questions about the 4-gas monitor mail in service, reach out via

We also have available services to bump test and certify H2S single gas monitors.

Gas detectors we are able to calibrate currently include:

GasAlert Micro Clip XL

GasAlert Micro Clip XT

GasAlert Max XT II

GasAlert Quattro

Please email us if your 4 gas monitor is not on the list as we are adding new capability all the time.

How often do four gas monitors need to be recalibrated? Your four-gas monitor needs to be recalibrated at an interval consistent with the manufacturers instructions as well as your company policy. Many four-gas monitors come from the factory with a 6 month required recalibration interval. Critical use may require a shorter interval, such as recalibration every month. Make sure to consult with your company policy as well as the user manual for required 4-gas recalibration. If it is time to get the monitor to be recalibrated then take it in to us and we have a 4-gas calibration service for your convenience and peace of mind.


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Medical Qualification

All workers must have a valid medical examination before fit testing. OSHA requires that a physician has certified that the worker is healthy enough to wear a respirator. The option to add an electronic MEQ is included when booking the fit test. If a worker requires a physician evaluation including a pulmonary function test then they should use a third party medical examiner near the training center such as Concentra or Texas MedClinic.


Visit Us

9200 Broadway #114, San Antonio, TX

Call Us

(210) 802-4026