乙二醇甲醚
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甲醇中乙二醇甲醚（2-甲氧基乙醇）溶液
BW06590 | 2000μg/mL
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甲醇中乙二醇甲醚（2-甲氧基乙醇）溶液
BW06591 | 1000μg/mL
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甲醇中乙二醇甲醚（2-甲氧基乙醇）溶液
BW06591d | 103.4µg/mL
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甲醇
H17125-1 | 色谱级, ≥99.9%
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甲醇
H17125-3 | GCS,≥99.9%
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乙二醇甲醚
H17345-1 | GCS,≥99%
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乙二醇
H17472-500ml | AR,98%
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甲醇中强力霉素
BW-SCL-TM-00041 | 1000 mg/L
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甲醇中金霉素
BW-SCL-TM-00040 | 1000 mg/L
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甲醇中四环素
BW-SCL-TM-00263 | 1000μg/mL
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甲醇中三聚氰胺
BW-OTL-HM-01554 | 100μg/mL
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正己烷中4,4’-滴滴滴
BW-NCL-HN-00023 | 100μg/mL
Reference Material
This certificate is designed in accordance with ISO17034 and ISO Guide 31. This reference material (RM) was designed,produced andverified in accordance with ISO/IEC 17025, ISO 17034 and a registered qualitymanagement system ISO9001.
Product Name
2-Methoxyethanol
Product Code
BW903006
Lot Number
23041542
CAS No.
109-86-4
Mol. Formula
C3H8O2
Mol. Weight
76.09
Certified on
20 Apr 2023
Expiry Date
19 Apr 2025
Storage Temp
20°C ± 4°C
Specification
0.5 mL
CERTIFIED
Purity
CERTIFIED
Expanded Uncertainty (U)
Approved by
99.3%
0.5%
Uncertainty
The certified value(s) and uncertainty(ies) aredetermined in accordance with ISO 17034 with an 95% confidence level (k=2).Uncertainty is based on the Total Combined Uncertainty, including uncertaintiesof characterisation, homogeneity and stability testing. Stability values arebased on real evidence opposed to simulation.
The producer certifies that this reference materialmeets the specification stated in this certificate until the expiry date,provided it is stored unopened at the recommended temperature herein. Productwarranties for this reference material are set out in the terms and conditionsof purchase.
Intended Use
This RM is intended for use in a laboratory as acalibration and quality control standard or in method development foranalytical techniques.
Safety
Proper precautions should be observed whilehandling. See Safety Data Sheet.
Traceability
The balances used for gravimetric measurements arecalibrated with weights traceable to the national standards (DKD). Thecalibration of the balances is verified daily internally and annually by anexternal accredited calibration service. Chromatographic methods are traceableto the International System of Units (SI).
Homogeneity
Random replicate samples of the final packaged RMhave been analysed to prove homogeneity compliant with ISO 17034.
Storage
The RM should be stored in the original sealedcontainer at the indicated temperature.
Instructions for use
It is recommended to use 1 mg as the minimum samplesize and if less material is used, to increase the certified uncertainty by afactor of two for half sample and four for a quarter of sample. If storageafter opening is necessary, the RM should be tightly closed and kept from lightand moisture. If the RM was in a sealed ampoule, it should be transferred to avial with minimum head space.
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2. 色谱条件：进样口温度250℃，检测器温度300℃，柱温程序升温50℃(2min)→20℃/min→220℃(5min)
3. 定性定量：通过保留时间定性，峰面积外标法定量
2. 实验过程需在通风橱操作，避免接触皮肤
3. 当样品中含水率＞1%时需采用脱水前处理
以上信息仅供参考，请以相应标准的原文为准！