This certificate is designed in accordance with ISO 17034 and
ISO Guide 31. This reference material
(RM) was designed,produced and verified in accordance with ISO/IEC
17025, ISO 17034 and a registered
quality management system ISO 9001.
Product Name(产品名称)12 Phenol Mix in Methanol and Water(9:1),1000μg/mL(甲醇和水中12种酚类混标)
1.The values of the above components were tested at the wavelength of 310nm.（以上组分在波长310nm下进行量值核验） 2.The values of the above components were tested at the wavelength of 350nm.（以上组分在波长350nm下进行量值核验） 3.The values of the above components were tested at the wavelength of 280nm.（以上组分在波长280nm下进行量值核验） 4.The values of the above components were tested at the wavelength of 315nm.（以上组分在波长315nm下进行量值核验） 5.The product contains a few of acetone.(本产品含有少量丙酮)
Intended Use
This RM is intended for use in a laboratory as a calibration and quality control standard or in
method development for analytical techniques.
Uncertainty
The certified value(s) and uncertainty(ies) are determined in accordance with ISO
17034 with an 95%
confidence level (k=2). Uncertainty is based on the Total Combined Uncertainty, including
uncertainties of preparation, purity of neat materials, homogeneity, stability testing.
Traceability
The balances used for gravimetric measurements are calibrated with weights traceable to the national
standards. The calibration of the balances is verified annually by an external accredited
calibration service. This analysis method has been verified using an approach consistent with
ISO 17034:2016 & ISO 17025:2017.
Homogeneity
Random replicate samples of the final packaged RM have been analysed to prove homogeneity consistent
with ISO 17034.
Storage
The RM should be stored in the original sealed bottle at the indicated temperature.
