分析证明

土壤中 硝酸盐氮

产品编号: SCQC-917    批号:S1020 
危害: 刺激                     基质: 土壤
 

能力验证

储存及使用说明

需要2-8*C保存

混匀，通风橱中取样
选用适当的方法提取及分析各项目
无需干燥校准，基于100%固体，以mg/Kg为单位回报结果

不要用基质加标回收率校正分析结果

溯源

原料:分析项目原料选用可用的最高纯度原料用于配制该样品。如有相应的NIST标准物质可用，原料纯度及不确定度会与其对照分析校验
天平:所有天平按IS017025校准实验室认证要求每季度校准一次，溯源至NIST。所有天平每天按照内部标准操作程序查验，查验所用砝码按17025认证要求每年校准一次。
温度计:所有温度计溯源至NIST，每年校准一次
玻璃器皿:此样品配制过程中涉及的所有玻璃器监为人级，所有玻璃器皿启用前经过内部标准操作程序校验，称液器按17025认证要求每月校准一次。均匀性/稳定性/保质期。

不确定度

不确定度为95%置信区间扩展系数K=2

Certificate of Analysis

Nitrate as N in Soil

Catalog Number:SCQC-917                    Expiraton Date:2022-10-31

Lot Number:S1020                                  Matrix: Soil

Manufacture Date: 10/07/20                   Hazards Irritant

Certified Date: 10/07/20

Study Certified Acceptance

This duality control sample was manufactured by NSI Lab Solutions followind auality procedures meetina the reauirements of ISO 9001ISO17025,and ISO17034.Acceptance limits are set at current NELAC standards.The study mean is set at the mean of an interlaboratory proficiency testing study with outlier rejection.This sampie is intended to be used to validate analytical methods,for detection limit studies and analyst proficiency testing

Storage Instructions For Use

Required storage condition is 2-8C.
Mix well.Open and subsample in a fume hood
No modification to the sample prior to sub-sampling is necessary.
The soil CRM is to be extracted and analyzed using an appropriate extraction and analytical method.
Report results as mg/kg assuming 100% solids. No dry weight correction is required. Do not correct the analytical results for matrix spike recovery bias,

Traceability Informatio

Analvte Source Materials:The hiahest purity analvte source materials are used in the manufacture of this sample. Analyte source material purity and associated uncertainty has been analytically verified against appropriate NIST SRMs,
Balance: All analytical balances are calibrated on a semiannual basis by an ISO 17025 accredited calibration laboratory and are traceable to NISTTraceable Calibration Certificate available upon request.
All balances are checked daily by an in-house standard operating procedureThe weights used for this daily verification are calibrated annually by an ISO 17025 accredited calibration laboratory and are certified traceable to NIST.Certificate of Calibration and Traceability available upon request.

Catalog Number: SCQC-917

Lot Number:S1020
Thermometer: All thermometers are NIST traceable through thermometers that are calibrated annually by an ISO 17025 accredited calibration laboratory.
Giassware: All glassware used in the manufacture of our samples is Class A.An in-house standard operating procedure is used to verify all glassware prior to it being placed into service.Volumetric pipetors are calibrated every four months by an Iso 17025 accredited calibration laboratory.

Homogeneity/Stability/Expiration

This quality control sample was thoroughly mixed in production.Batch homogeneity was established through analyses of samples chosen at random.The stability of this quality control sample is based on short-term and long-term monitoring of the certified concentration.The expiration date is guaranteed to be valid from the manufacture date and is based on results of long-term monitoring.

Ucertainty

The ± uncertainty associated with the certified concentration is the expanded uncertainty at 95% confidence interval (CI) with K=2.This expanded uncertainty incorporates contributions from manufacturing,homogeneity, and stability.

注：以上信息仅供参考，以产品附带证书为准。