Gases | STG (stg2.airgas.com)

We use cookies to improve your browsing experience and help us improve our websites. By continuing to use our website, you agree to our use of such cookies. Agree Learn more

Need an Account? Register or Login

One Time Payment | Need an Account? Register or Login

Find A Branch
Customer Service
SDS Search
Careers

Switch Account
Dashboard

Skip to main content

To see product availability

Enter a Delivery Zip Code

Need an Account? Register or Login

One Time Payment | Need an Account? Register or Login

Find A Branch
Customer Service
SDS Search
Careers

×

To see product availability

Enter a Delivery Zip Code

Shop
Industries
Solutions
Resources

TELL US MORE

To receive the most up-to-date product availability, pricing and delivery options, enter your zip code or log in to your account

Zip Code should not be blank Email and Password should not be blank

Enter Delivery Zip Code

or

Log In

Email Address

Password Show Hide

LOG IN

Forgot Password?

Need an Account? Register

TELL US MORE

Are you currently located in California?

8 characters minimum
One number
One lowercase letter
One uppercase letter
One special character (!@#$%&*)

Password cannot contain space

Pursuant to CA SB 478, if you are located in California, Airgas cannot display your product pricing until all items have been added to your shopping cart so that we can calculate all applicable fees, including, but not limited to, shipping and handling fees.

No

Yes

Have an account?Login

Gases
Gas Equipment
Welding Products
Safety Products
Tools & Hardware

#1 Promotion Text #1
View All

Home/
Category Page/
Gases

Results For:
By Category
Gases
Gas Comp Amount3
18.0000000 100 15.6000000

Narrow Results:

By Category
Mixed Gases (12)

By Manufacturer
Airgas (11)

BW Technologies (1)

Gas Grade
Portable Calibration Mix (1)

Cylinder Size
DQA test cyl size bus facet 1 (4)

DQA test cyl size bus facet 2 (4)

dqa test cylinder size business facet 1 (3)

dqa test cylinder size business facet 2 (3)

34DAL (1)

CGA Connection
580 (3)

660 (2)

590 (1)

C10 (1)

Gas Comp Amount1
450.0000000 (1)

81.0000000 (3)

78.0000000 (1)

76.0000000 (1)

64.0000000 (1)

50 (1)

45.0000000 (1)

3.4000000 (1)

Gas Comp 2
% CARBON DIOXIDE (5)

% NITROGEN (3)

% OXYGEN (2)

% HELIUM (1)

Gas Comp Amount2
99.9937000 (1)

81.9550000 (1)

81.0000000 (1)

79.4875000 (1)

18 (1)

18.0000000 (1)

6.0000000 (1)

4.0000000 (1)

3.4000000 (1)

1.0000000 (2)

Gas Comp 3
% HELIUM (3)

% NITROGEN (3)

% CARBON DIOXIDE (2)

% OXYGEN (1)

PPM CARBON MONOXIDE (1)

PPM HYDROGEN CHLORIDE (1)

PPM NITRIC OXIDE (1)

Gas Comp Amount3
120000.0000000 (1)

50000.0000000 (1)

5117.0000000 (1)

4000.0000000 (1)

3485.0000000 (1)

2750.0000000 (1)

2250.0000000 (1)

2000.0000000 (5)

1700.0000000 (1)

1050.0000000 (1)

950.0000000 (2)

900.0000000 (4)

800.0000000 (4)

660.0000000 (1)

625.0000000 (1)

600.0000000 (1)

550.0000000 (1)

540.0000000 (1)

500.0000000 (1)

425.0000000 (1)

410.0000000 (1)

400.0000000 (1)

330.0000000 (1)

300.0000000 (2)

275.0000000 (1)

255.0000000 (1)

250.0000000 (2)

200.0000000 (3)

180.0000000 (5)

150.0000000 (1)

135.0000000 (3)

130.0000000 (1)

125.0000000 (1)

110.0000000 (2)

99.9640000 (2)

99.9200000 (1)

99.9710000 (1)

99.9721000 (1)

99.9828000 (1)

99.9840000 (1)

99.9872500 (1)

99.9885000 (1)

99.9910000 (1)

99.9945000 (1)

99.9951500 (1)

99.9976000 (1)

99.9982000 (1)

99.9989000 (1)

99.9992500 (1)

99.8955000 (2)

99.8972000 (2)

99.8995000 (2)

99.8020000 (1)

99.8900000 (1)

99.8905000 (1)

99.8910500 (1)

99.8920000 (1)

99.8925000 (1)

99.8930000 (1)

99.8950000 (1)

99.8952000 (1)

99.8952500 (1)

99.8962000 (1)

99.8965000 (1)

99.8966000 (1)

99.8970000 (1)

99.8973000 (1)

99.8975000 (1)

99.8982000 (1)

99.8992000 (1)

99.8993000 (1)

99.8994000 (1)

99.7958000 (1)

99.7972500 (1)

98.9820000 (1)

98.9925000 (1)

98.9955000 (1)

97.9940000 (1)

97.9950000 (1)

97.4925000 (1)

97.4950000 (1)

95.0000000 (1)

94.9980000 (2)

94.9500000 (1)

94.9900000 (1)

94.8200000 (1)

94.0000000 (2)

92.9955000 (1)

92.4975000 (1)

92.0000000 (1)

91.0000000 (1)

90.9850000 (1)

90.0000000 (5)

89.6000000 (1)

88.9725000 (1)

88.0000000 (2)

86.0000000 (1)

85.0000000 (2)

84.9950000 (1)

84.5000000 (1)

83.5420000 (2)

83.0000000 (1)

82.4000000 (1)

82.0000000 (1)

81.2425000 (1)

81.0000000 (1)

80.8925000 (1)

80.6375000 (1)

80.1965000 (1)

80.0000000 (8)

79.6000000 (1)

79.4875000 (1)

79.0000000 (1)

79.0830000 (1)

79.0900000 (1)

78.9960000 (1)

78.0000000 (1)

77.9600000 (1)

77.9945000 (1)

77.4100000 (1)

77.4820000 (1)

77.4910000 (1)

77.3200000 (1)

75.0000000 (3)

74.9000000 (1)

74.0000000 (2)

73.0000000 (1)

72.0000000 (1)

71.0000000 (1)

70.0000000 (8)

69.0000000 (1)

68.7000000 (1)

68.0000000 (1)

67.0000000 (1)

62.0000000 (1)

59.0000000 (1)

58.0000000 (1)

57.0000000 (1)

55.0000000 (10)

47.5000000 (1)

47.0000000 (1)

45.0000000 (2)

43.0000000 (2)

42.0000000 (2)

39.6000000 (2)

38.0000000 (3)

37.5000000 (2)

34.0000000 (1)

33.5000000 (1)

33.0000000 (6)

32.5000000 (3)

32.0000000 (3)

31.4000000 (1)

29.6000000 (1)

29.0000000 (1)

28.0000000 (2)

27.0000000 (2)

26.0000000 (1)

24.5000000 (1)

24.0000000 (1)

23.4000000 (2)

23.0000000 (1)

22.5000000 (2)

22.0000000 (5)

21.0000000 (8)

19.9000000 (1)

19.0000000 (4)

17.0000000 (2)

16.0000000 (1)

15.5000000 (1)

14.5000000 (1)

14.0000000 (4)

13.5000000 (4)

13.0000000 (1)

12.7000000 (1)

12.5000000 (3)

12.5300000 (1)

12.0000000 (10)

11.5000000 (1)

11.0000000 (6)

10.5000000 (1)

9.8000000 (1)

9.5000000 (3)

9.0000000 (4)

8.5000000 (3)

8.0000000 (11)

7.5000000 (7)

7.0000000 (3)

6.5000000 (1)

6.2500000 (1)

6.0000000 (6)

4.0000000 (11)

3.7500000 (1)

3.5000000 (1)

3.4000000 (1)

3.0000000 (5)

2.5000000 (3)

2.2000000 (1)

2.1000000 (1)

1.8000000 (3)

1.8500000 (1)

1.7500000 (1)

1.5000000 (3)

1.5800000 (1)

1.1000000 (1)

1.0500000 (2)

0.8500000 (1)

0.7500000 (3)

0.5000000 (9)

0.4000000 (1)

0.4500000 (1)

0.4600000 (1)

0.3000000 (8)

0.3950000 (2)

0.1000000 (1)

0.1200000 (1)

0.0048000 (1)

0.0160000 (1)

Gas Comp 4
% METHANE (1)

PPM HYDROGEN SULFIDE (1)

Gas Comp Amount4
25 (1)

2.5000000 (1)

Gas Comp 5
NITROGEN (1)

PPM HYDROGEN SULFIDE (1)

Gas Comp Amount5
25.0000000 (1)

BALANCE (1)

Compare Products Up to 4

Gases

Sort by:

B8654-9044E

Carbon Monoxide, Hydrogen Sulfide And Propane Calibration Gas, 58Liter Aluminum Cylinder For Use With Multi-Gas Monitor

Carbon Monoxide, Hydrogen Sulfide And Propane Calibration Gas, 58Liter Aluminum Cylinder For Use With Multi-Gas Monitor

Show Full Description Hide Full Description

Compare

Carbon Monoxide, Hydrogen Sulfide And Propane Calibration Gas, 58Liter Aluminum Cylinder For Use With Multi-Gas Monitor

Carbon Monoxide, Hydrogen Sulfide And Propane Calibration Gas, 58Liter Aluminum Cylinder For Use With Multi-Gas Monitor

Carbon Monoxide, Hydrogen Sulfide And Propane Calibration Gas, 58Liter Aluminum Cylinder For Use With Multi-Gas Monitor

Show Full Description Hide Full Description

Airgas Part #:B8654-9044E

X03HE81Z3000395

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Laser Plus 324 Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Laser Plus 324 Gas Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Compare

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Laser Plus 324 Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Laser Plus 324 Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Laser Plus 324 Gas Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Airgas Part #:X03HE81Z3000395

X05NI79CA3459B2

Ct 25PPM Hydrogen Sulfide 100PPM Carbon Monoxide 2.5% Methane 18% Oxygen Balance Nitrogen Size 34DAL Certified Standard-spec CGA C10 **approved**

Ct 25PPM Hydrogen Sulfide 100PPM Carbon Monoxide 2.5% Methane 18% Oxygen Balance Nitrogen Size 34DAL Certified Standard-spec CGA C10 approved

Show Full Description Hide Full Description

Compare

Ct 25PPM Hydrogen Sulfide 100PPM Carbon Monoxide 2.5% Methane 18% Oxygen Balance Nitrogen Size 34DAL Certified Standard-spec CGA C10 **approved**

Ct 25PPM Hydrogen Sulfide 100PPM Carbon Monoxide 2.5% Methane 18% Oxygen Balance Nitrogen Size 34DAL Certified Standard-spec CGA C10 **approved**

Ct 25PPM Hydrogen Sulfide 100PPM Carbon Monoxide 2.5% Methane 18% Oxygen Balance Nitrogen Size 34DAL Certified Standard-spec CGA C10 approved

Show Full Description Hide Full Description

Airgas Part #:X05NI79CA3459B2

E03NI99E15A00R4

18PPM Nitric Oxide, 45PPM Carbon Monoxide Balance Nitrogen EPA Protocol Gas Mixture, Size 150A Aluminum Cylinder, CGA-660

18PPM Nitric Oxide, 45PPM Carbon Monoxide Balance Nitrogen EPA Protocol Gas Mixture, Size 150A Aluminum Cylinder, CGA-660

Show Full Description Hide Full Description

Compare

18PPM Nitric Oxide, 45PPM Carbon Monoxide Balance Nitrogen EPA Protocol Gas Mixture, Size 150A Aluminum Cylinder, CGA-660

18PPM Nitric Oxide, 45PPM Carbon Monoxide Balance Nitrogen EPA Protocol Gas Mixture, Size 150A Aluminum Cylinder, CGA-660

18PPM Nitric Oxide, 45PPM Carbon Monoxide Balance Nitrogen EPA Protocol Gas Mixture, Size 150A Aluminum Cylinder, CGA-660

Show Full Description Hide Full Description

Airgas Part #:E03NI99E15A00R4

E03NI64E15A1063

18% Carbon Dioxide 18% Oxygen Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-590

18% Carbon Dioxide 18% Oxygen Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-590

Show Full Description Hide Full Description

Compare

18% Carbon Dioxide 18% Oxygen Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-590

18% Carbon Dioxide 18% Oxygen Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-590

18% Carbon Dioxide 18% Oxygen Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-590

Show Full Description Hide Full Description

Airgas Part #:E03NI64E15A1063

X03NI99T15W0004

GMACS 5PPM SULFUR HEXAFLUORIDE 18PPM HYDROGEN CHLORIDE BALANCE NITROGEN SIZE 150W GMACS MIX CGA 330 GAS MANUFACTURERS ALTERNATIVE

GMACS 5PPM SULFUR HEXAFLUORIDE 18PPM HYDROGEN CHLORIDE BALANCE NITROGEN SIZE 150W GMACS MIX CGA 330 GAS MANUFACTURERS ALTERNATIVE

Show Full Description Hide Full Description

Compare

GMACS 5PPM SULFUR HEXAFLUORIDE 18PPM HYDROGEN CHLORIDE BALANCE NITROGEN SIZE 150W GMACS MIX CGA 330 GAS MANUFACTURERS ALTERNATIVE

GMACS 5PPM SULFUR HEXAFLUORIDE 18PPM HYDROGEN CHLORIDE BALANCE NITROGEN SIZE 150W GMACS MIX CGA 330 GAS MANUFACTURERS ALTERNATIVE

GMACS 5PPM SULFUR HEXAFLUORIDE 18PPM HYDROGEN CHLORIDE BALANCE NITROGEN SIZE 150W GMACS MIX CGA 330 GAS MANUFACTURERS ALTERNATIVE

Show Full Description Hide Full Description

Airgas Part #:X03NI99T15W0004

E03NI81E15A0297

450PPM Nitric Oxide 18% Carbon Dioxide Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-660

450PPM Nitric Oxide 18% Carbon Dioxide Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-660

Show Full Description Hide Full Description

Compare

450PPM Nitric Oxide 18% Carbon Dioxide Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-660

450PPM Nitric Oxide 18% Carbon Dioxide Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-660

450PPM Nitric Oxide 18% Carbon Dioxide Balance Nitrogen EPA Protocol Standard Mixture, Size 150A Aluminum Cylinder, CGA-660

Show Full Description Hide Full Description

Airgas Part #:E03NI81E15A0297

X03HE76Z3003040

6% Carbon Dioxide 18% Nitrogen Balance Helium Laser Plus 327 Mixture, Size 300 Cylinder, CGA-580

6% Carbon Dioxide 18% Nitrogen Balance Helium Laser Plus 327 Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Compare

6% Carbon Dioxide 18% Nitrogen Balance Helium Laser Plus 327 Mixture, Size 300 Cylinder, CGA-580

6% Carbon Dioxide 18% Nitrogen Balance Helium Laser Plus 327 Mixture, Size 300 Cylinder, CGA-580

6% Carbon Dioxide 18% Nitrogen Balance Helium Laser Plus 327 Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Airgas Part #:X03HE76Z3003040

AR HE18CD1CS3

Industrial 1% Carbon Dioxide 18% Helium Balance Argon Size 300 16PK Industrial-mix CGA-580

Industrial 1% Carbon Dioxide 18% Helium Balance Argon Size 300 16PK Industrial-mix CGA-580

Show Full Description Hide Full Description

Compare

Industrial 1% Carbon Dioxide 18% Helium Balance Argon Size 300 16PK Industrial-mix CGA-580

Industrial 1% Carbon Dioxide 18% Helium Balance Argon Size 300 16PK Industrial-mix CGA-580

Industrial 1% Carbon Dioxide 18% Helium Balance Argon Size 300 16PK Industrial-mix CGA-580

Show Full Description Hide Full Description

Airgas Part #:AR HE18CD1CS3

AR HE18CD1CS3C

Argon 81 He 18 Cd 1 Size 300 16PK Customer Owned CGA-580

Argon 81 He 18 Cd 1 Size 300 16PK Customer Owned CGA-580

Show Full Description Hide Full Description

Compare

Argon 81 He 18 Cd 1 Size 300 16PK Customer Owned CGA-580

Argon 81 He 18 Cd 1 Size 300 16PK Customer Owned CGA-580

Argon 81 He 18 Cd 1 Size 300 16PK Customer Owned CGA-580

Show Full Description Hide Full Description

Airgas Part #:AR HE18CD1CS3C

X03HE81Q3000875

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Non Medical Laser Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Non Medical Laser Gas Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Compare

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Non Medical Laser Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Non Medical Laser Gas Mixture, Size 300 Cylinder, CGA-580

3.4% Carbon Dioxide, 15.6% Nitrogen Balance Helium Non Medical Laser Gas Mixture, Size 300 Cylinder, CGA-580

Show Full Description Hide Full Description

Airgas Part #:X03HE81Q3000875

AR HE18CD4300C

Argon 78 He 18 Cd 4 Size 300 Customer Owned CGA-580

Argon 78 He 18 Cd 4 Size 300 Customer Owned CGA-580

Show Full Description Hide Full Description

Compare

Argon 78 He 18 Cd 4 Size 300 Customer Owned CGA-580

Argon 78 He 18 Cd 4 Size 300 Customer Owned CGA-580

Argon 78 He 18 Cd 4 Size 300 Customer Owned CGA-580

Show Full Description Hide Full Description

Airgas Part #:AR HE18CD4300C

Gas Supply

Gas Supply Modes
Bulk
Cylinders
Dynamic On-site Mixer
Jobsite Skid
Liquid Cylinders
MicroBulk
On-site Generation - FLOXAL

Solutions

Airgas Dry Ice
eBusiness Solutions
Red-D-Arc
Safety Solutions
Supply Chain Solutions
Welding Automation
Welding Efficiency

Industries

Airgas Healthcare
Beverage
Construction
Energy & Chemicals
Food
Life Sciences
Metal Fabrication
Primary Materials
Retail

Resources

Airgas Outlet
Catalogs
COA Search
FAQs
Offers & Rebates
Safety Notices
SDS Search
Tutorials
User Guides

Our Company

Careers
Events
Mergers & Acquisitions
Newsroom
Overview
Sustainability
Visit Parent Company

Contact

Connect with Sales
Customer Service
Find a Branch
Emergency Response

Login
Register
Shop Products
Find A Branch
Industries
Solutions
Customer Service
Search Careers
Newsroom

© 2023 Airgas, Inc. All Rights Reserved.
|Customer Service ||Privacy Policy ||Terms & Conditions ||Terms of Sale ||Do Not Sell/Share My Personal Information ||Mobile App Policy ||Website Accessibility ||Return Policy |

560E68F9D9A4084BCEB8C6402B36B633