PRODUCT: Turpentine @ 2,000µg/ml inMethanol

MATRIX: Methanol

PREPARATION OF STANDARD:

All analytical measuring devices and instrumentation have been pre-calibrated. The actual concentrations reported below are based on this preparation methodology and compound impurities.

The expanded uncertainty (k=2) due to weighing, and volumetric preparation is calculated in compliance with EURACHEM/CITAC Guide: Quantifying Uncertainty in Analytical Measurements as ± 2.5%.

TRACEABILITY IN THE PRODUCTION OF THIS STANDARD

This product was prepared gravimetrically on a weight/volume basis. The solute was weighed on a balance calibrated by Reagecon engineers using OIML traceable weights. Reagecon holds ISO 17025 accreditation for calibration of non-automatic weighing machines (265C). The resulting Balance Certificate of Calibration was issued in accordance with the requirements of ISO/IEC 17025. The balance was calibrated under monitored environmental conditions and atmospheric pressure. Tests were performed for capacity, readability, repeatability, eccentricity and linearity. Dilution of the final product to volume was performed using internally calibrated Class A volumetricglassware.

STORAGE/USAGE INSTRUCTIONS:

Please store this product at room temperature (5-30°C). To open product, invert at least 10 times (do not shake) and sonicate if solid material is apparent. Break the ampoule open at the lower neck mark (caution: sharp glass) and transfer to vial. Allow to return to room temperature before use. Store after opening at room temperature. Invert, sonicate and allow vial to return to room temperature before each subsequent use. Use only Class A volumetric glassware for dilutions and ensuring thorough mixing.

注：证书信息仅供参考，以产品附带证书为准。