{"query":{"parameter":"nitrite","place":"MX","medium":null,"statistic":null,"kind":null},"searched":{"places":["MX"],"parameter_keys":["cas:14797-65-0","cas:71487-01-9","cas:109-95-5","cas:110-46-3","cas:542-56-3","name:nitrate and nitrite","cas:14797-55-8","name:nitrate-n + nitrite-n","name:nitrate + nitrite","name:nitrate + nitrite as n","name:nitrate+nitrite","name:nitrate/nitrite","name:nitrate/nitrite as n","name:nitrate plus nitrite","name:nitrate plus nitrite nitrogen","name:nitrite as n","cas:7632-00-0","name:nitrite - n","name:nitrite-n","name:nitrite + nitrate","name:nitrite+nitrate","name:nitrite plus nitrate","name:total nitrate and nitrite","name:total nitrate + nitrite","name:nitrates et nitrites","name:nitrates + nitrites","name:nitrates+nitrites"],"names_matched":[["nitrite","cas:14797-65-0"],["bis coconut oil alkyl dimethylammonium nitrite","cas:71487-01-9"],["ethyl nitrite","cas:109-95-5"],["isoamyl nitrite","cas:110-46-3"],["isobutyl nitrite","cas:542-56-3"],["nitrate and nitrite","name:nitrate and nitrite"],["nitrate and nitrite as n","name:nitrate and nitrite"],["nitrate as n criterion also applies to total nitrate nitrite","cas:14797-55-8"],["nitrate n nitrite n","name:nitrate-n + nitrite-n"],["nitrate nitrite","name:nitrate + nitrite"],["nitrate nitrite","name:nitrate + nitrite as n"],["nitrate nitrite","name:nitrate+nitrite"],["nitrate nitrite","name:nitrate/nitrite"],["nitrate nitrite","name:nitrate/nitrite as n"],["nitrate nitrite as n","name:nitrate + nitrite"],["nitrate nitrite as n","name:nitrate + nitrite as n"],["nitrate nitrite as n","name:nitrate+nitrite"],["nitrate nitrite as n","name:nitrate/nitrite"],["nitrate nitrite as n","name:nitrate/nitrite as n"],["nitrate nitrite as nitrogen","name:nitrate + nitrite"],["nitrate nitrite as nitrogen","name:nitrate + nitrite as n"],["nitrate nitrite as nitrogen","name:nitrate+nitrite"],["nitrate nitrite as nitrogen","name:nitrate/nitrite"],["nitrate nitrite as nitrogen","name:nitrate/nitrite as n"],["nitrate nitrite sum as nitrogen","name:nitrate + nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate + nitrite as n"],["nitrate nitrite sum as nitrogen","name:nitrate+nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate/nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate/nitrite as n"],["nitrate plus nitrite","name:nitrate plus nitrite"],["nitrate plus nitrite as nitrogen n","name:nitrate plus nitrite"],["nitrate plus nitrite nitrogen","name:nitrate plus nitrite nitrogen"],["nitrite as n","name:nitrite as n"],["nitrite d ethyle","cas:109-95-5"],["nitrite d isoamyle","cas:110-46-3"],["nitrite de sodium","cas:7632-00-0"],["nitrite n","name:nitrite - n"],["nitrite n","name:nitrite-n"],["nitrite nitrate","name:nitrite + nitrate"],["nitrite nitrate","name:nitrite+nitrate"],["nitrite nitrate as n","name:nitrite + nitrate"],["nitrite nitrate as n","name:nitrite+nitrate"],["nitrite nitrate both as n","name:nitrite + nitrate"],["nitrite nitrate both as n","name:nitrite+nitrate"],["nitrite plus nitrate","name:nitrite plus nitrate"],["sodium nitrite","cas:7632-00-0"],["total nitrate and nitrite","name:total nitrate and nitrite"],["total nitrate and nitrite as nitrogen","name:total nitrate and nitrite"],["total nitrate nitrite","name:total nitrate + nitrite"],["dicoco alkyldimethyl ammonium nitrites","cas:71487-01-9","nitrites"],["nitrates et nitrites","name:nitrates et nitrites","nitrites"],["nitrates et nitrites n no2 et n no3","name:nitrates et nitrites","nitrites"],["nitrates nitrites","name:nitrates + nitrites","nitrites"],["nitrates nitrites","name:nitrates+nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates + nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates+nitrites","nitrites"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":1,"names":["Nitrógeno de nitratos (N-NO 3 - )"],"says":"1 rows share a parameter key with a longer name holding \"nitrite\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"nitrite\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"2352c07f19362c7f","parameter":"Nitrógeno de nitritos (N-NO 2 - )","value":"0.90","value_num":0.9,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:14797-65-0","place":["MX"],"conditions":[],"cite":{"instrument":"mx_nom127_ssa1_2021","title":"NOM-127-SSA1-2021 — Agua para uso y consumo humano. Límites permisibles de la calidad del agua: Tablas 1 to 14 and Apéndice A Normativo, Tablas A.1 to A.3","issuer":"Secretaría de Salud (Comisión Federal para la Protección contra Riesgos Sanitarios), Estados Unidos Mexicanos","edition":"DOF 02/05/2022 (in force 360 natural days from the day after publication — 10. Vigencia; turbidity 3.0 UNT from the second year after entry into force — Tabla 1 note a; fluoride 1.0 mg/L, arsenic 0.01 mg/L and cadmium 0.003 mg/L one, three or six years after entry into force by locality size — Tablas 3 and 5; repeals the 2000 modification of NOM-127-SSA1-1994 — Transitorio Único)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5650705&fecha=02/05/2022","source_sha256":"ccafe3317244274e237d8bfc92051f8396f8d3342782d37d7b4e954099889b46","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"not verified"},"section":"NOM-127-SSA1-2021, Tabla 2 (especificaciones sanitarias químicas)","page":null,"quote":"Nitrógeno de nitritos (N-NO 2 - ) 0.90 mg/L"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"MX"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"nitrite\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check","url":"https://passage-data.com/api/v1/check","page":"https://passage-data.com/limits/MX/nitrite#check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"MX"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate","url":"https://passage-data.com/api/v1/certificate","page":"https://passage-data.com/limits/MX/nitrite#check"}]}