COMAR CRM FACTSHEET

PT NAME

Trust

(CRM) of BTEX – Benzene, Toluene, Ethylbenzene, Xylenes isomers (ortho-, meta and para-) in methanol.     MRC 8298 from Inmetro

Material

Methanol

Properties

Property	Property Value	Unit
	34.1 ± 3.1	µg/g
	172.6 ± 4.5	µg/g
	87.2 ± 3.2	µg/g
	87.3 ± 2.8	µg/g
	86.4 ± 2.4	µg/g
	86.9 ± 4.1	µg/g

1 - 6

Properties in bold italic are only indicative

Remarks

Cm Remarks

To ask this CRM send an e-mail to mrc-solicitacao@inmetro.gov.br, This Certified Reference Material (CRM) consists in a solution of benzene, toluene, ethylbenzene and xylenes isomers (ortho-, meta and para-) in methanol, gravimetrically prepared. The bottling of the solution occurs in individual amber ampoule with 1.5 mL/ampoule.

Intended use

Cm Use

This CRM is applied as calibration solution, providing metrological traceability to measurement, as
well as in quality control, development and validation of a method for determination of environmental
contaminants benzene, toluene, ethylbenzene and xylenes isomers (ortho- , meta and para-
). Commutativity evaluation is not applicable for this material.

Producer

Full name

INMETRO - Instituto Nacional de Metrologia, Qualidade e Tecnologia

Address

Av N Sra das Graças 50 Xerém D. Caxias, RJ, Brasil, CEP 25250-020

Country

Brazil

Website

Webshop

ct-mrc@inmetro.gov.br

Trust indicators

Inmetro lists 52 materials on COMAR, of which

      52 materials are accompanied by a certificate cf. ISO 17034

       52 materials are linked to statutory activities as an NMI or a DI

       0 materials have been produced under a valid ISO 17034 accreditation (N/D | N/D)

Ask the coordinator

If you find any mistakes please contact the RM Producer, ct-mrc@inmetro.gov.br
ID: 517777 | Last revision: 2025-01-28 | Direct link to this Fact sheet

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