{"product_id":"491-calibration-gas-mixture-50ppm-co-25ppm-h-s-0-7-pentane-50-lel-18-o-58l-58l-491","title":"491 Calibration Gas Mixture — 50ppm CO \/ 25ppm H₂S \/ 0.7% Pentane (50% LEL) \/ 18% O₂, 58L (58L-491)","description":"\u003cp\u003e\u003cstrong\u003e491 Calibration Gas Mixture\u003c\/strong\u003e — 50 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, 0.7% Pentane (50% LEL), 18% Oxygen, balance Nitrogen. Contained in a 58 Liter aluminum disposable cylinder with a C-10 connection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 58L-491\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-reference:\u003c\/strong\u003e equivalent to Gasco 491 mixture — same part number, manufacturer-direct pricing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4-gas \/ confined-space monitor calibration \u0026amp; bump testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e 24 months from fill date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e NIST-traceable calibration certificate included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder:\u003c\/strong\u003e 58L aluminum, C-10 connection. UN1956.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMade in the USA.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trigas USA","offers":[{"title":"Default Title","offer_id":48849318445273,"sku":"58L-491","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/3713\/3017\/files\/cylinder-58l-aluminum_e3270870-6cf5-48ca-97a3-f8c14fc93c11.jpg?v=1782301407","url":"https:\/\/trigas-usa.com\/products\/491-calibration-gas-mixture-50ppm-co-25ppm-h-s-0-7-pentane-50-lel-18-o-58l-58l-491","provider":"Trigas USA ","version":"1.0","type":"link"}