Catalog Number ：SCQC-930

Lot Number ：S1020

Expiraton Date： 2022-10-31

Manufacture Date: 10/16/20

Matrix：Soil

Hazards：Irritant

Certified Date: 10/19/20

Analyte	Analyte Mean（mg/Kg）	Certified Concentration（mg/Kg）	Acceptance Limits（mg/Kg）
Total Phosphorus	564	579±5.39	121-1130

This quality control sample was manufactured by NSI Lab Solutions following quality procedures meeting the requirements of ISO 9001, ISO 17025, and ISO 17034. 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 sample 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 2-8℃ .

Mix well. Open and sub-sample in a fume hood.

No modification to the sample prior to sub-sampling is necessary.

The soil sample 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

Analyte Source Materials: The highest purity analyte 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 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