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)4 Ester Mix in Ethanol,2500μg/mL,25000μg/mL(乙醇中4种酯类混标)
Transportation(运输条件) Biological ice bag transportation
(生物冰袋运输)
CERTIFIED
Component No. (组分数)
Peak Sequence (出峰顺序)
Component (组分)
CAS No.
Concentration (μg/mL) (浓度)
Relative Expanded Uncertainty(%)
(k=2) (相对扩展不确定度)
1
1
Ethyl Acetate
(乙酸乙酯)
141-78-6
25000
0.5
2
2
Ethyl Butyrate
(丁酸乙酯)
105-54-4
2500
1
3
3
Ethyl Hexanoate
(正己酸乙酯)
123-66-0
25000
0.5
4
4
Ethyl Lactate
(乳酸乙酯)
97-64-3
25000
0.5
Instrument(检测仪器) GC/FID
Column(色谱柱) DB-WAX(60m×0.25mm×0.25μm)
Injection Temp(进样口温度) 230℃
Detector Temp(检测器温度) 250℃
Method Details(方法参数) 60℃,20℃/min→250℃(5min)
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.
