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Arlington, TX 76012 Pocomoke City, MD 21851 Batesville, IN 47006 Certificate of Analysis http://www.riccachemical.com 1-888-GO-RICCA [email protected] ICP-MS Calibration Standard 1

Lot Number: 4211606 Product Number: RICPMS1 Expiration Date: NOV 2013 Manufacture Date:11/27/2012

Matrix: 5% Nitric Acid. This is a multielement solution that was prepared volumetrically to contain the elements and concentrations stated below. The uncertainty associated with the certified values is ± 1% relative. The concentrations are confirmed by ICP or ICP-MS. Contains: Name CAS# Grade Nitric Acid, HNO3 7697-37-2 Trace Metal Water, Deionized, H2O 7732-18-5 Trace Metals Analyzed

Test Name Assay Method Specification Result Appearance Clarity and Color Clear, colorless liquid Clear, colorless liquid

Analyte Analysis (ppm) Solute CAS# Grade NIST SRM#

Cerium (Ce) 10.0 (III) Nitrate Hexahydrate 10294-41-4 High Purity 3110 (Dy) 10.0 Dysprosium 1308-87-8 High Purity 3115 (Er) 10.0 Erbium Oxide 12061-16-4 High Purity 3116 (Eu) 10.0 Europium Oxide 1308-96-9 High Purity 3117 (Gd) 10.0 Gadolinium Oxide 12064-62-9 High Purity 3118 (Ho) 10.0 Holmium Oxide 12055-62-8 High Purity 3123 (La) 10.0 1312-81-8 High Purity 3127 (Lu) 10.0 Lutetium Oxide 12032-20-1 High Purity 3130 (Nd) 10.0 Neodymium Oxide 1313-97-9 High Purity 3135 (Pr) 10.0 Praseodymium Oxide 12037-29-5 High Purity 3142 (Sm) 10.0 Samarium Oxide 12060-58-1 High Purity 3147 (Sc) 10.0 Scandium Oxide 12060-08-1 High Purity 3148 (Tb) 10.0 Terbium Oxide 12037-01-3 High Purity 3157 (Th) 10.0 Thorium Nitrate 13470-07-0 High Purity 3159 (Tm) 10.0 Thulium Oxide 12036-44-1 High Purity 3160 (Yb) 10.0 Ytterbium (III) Oxide 1314-37-0 High Purity 3166 (Y) 10.0 Yttrium Oxide 1314-36-9 High Purity 3167

This standard is guaranteed to be stable and accurate provided the product is kept tightly capped and stored under normal laboratory conditions. Balances are calibrated using NIST traceable weights whose verification of maintenance and recalibration is documented per in-house Standard Operating Procedures. Class A glassware is also calibrated and routinely rechecked per in-house Standard Operating Procedures. Trace metal analyzed acids and Trace Metals Analyzed Water are used in the manufacture of this product. Triple cleaned containers are used in the manufacture of this product. Shelf Life (unopened container): Part Number Shelf Life RICPMS1-100 12 months Recommended Storage: 15°C - 30°C (59°F - 86°F)

Version: 4 LaNelle Ohlhausen Quality Assurance

This Certificate of Analysis is designed to comply with ISO Guide 31 "Reference Materials -- Contents of Certificates and Labels." To determine manufacture site using lot number, visit http://www.riccachemical.com/Documents/lot.pdf.

Version: 4