SQCO-003

Lot Number：S1020
Date： Hazards： IRRITANT
Solvent：SOIL

Storage Instructions For Use

Required storage is 2°C to 8°C.

Retrieve a vial and allow to equilibrate to room temperature.

This sample has been designed to be totally used. Do not subsample since intra-sample homogeniety cannot be assured. Transfer the entire contents of the sample vial and rinse the vial with 2 small aliquots of extraction solvent adding rinseates to the extraction vessel. Complete the analysis according to your normal procedures.

Determine the concentration of the analytes listed. Report in ug/kg assuming a 30 g sample size. No dry weight correction is required.

Traceability Information

Analyte Source Materials: The highest purity analyte source materials are used in the manufacture of this CRM. Analyte source material purity and associated uncertainty has been analytically verified against appropriate NIST SRMs, where available.

Balance:All analytical balances are calibrated on a semiannual basis by an ISO 17025 accredited calibration laboratory and are traceable to NIST. Traceable Calibration Certificate available upon request.

All balances are checked daily by an in-house standard operating procedure. The 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.

Thermometer:All thermometers are NIST traceable through thermometers that are calibrated annually by an ISO 17025 accredited calibration laboratory.

Glassware: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.

Homoaeneity/Stability/Expiration

This CRM was thoroughly mixed in production. Batch homogeneity was established through analyses of samples chosen at random consistent with guide ISO-35:2017. The stability of this CRM is based on short-term and longterm 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

注：证书信息仅供参考，以产品附带证书为准。