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428-20 Mixture

GASCO 428-20 Calibration Gas Mixture: 60 PPM Carbon Monoxide, 20 PPM Hydrogen Sulfide, 1.45 % Methane (29 % LEL) (58% LEL Pentane Simulant), 15 % Oxygen, Balance Nitrogen, Certification: NIST, Made in USA

 

GASCO 34L-428-20

GASCO 58L-428-20

GASCO 116L-428-20





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