Description

Specifications Table

Product Name – Gold, 1000 ppm ICP-ML, single-element standard
Quantity/Pack Size – 100 ml
Form – Liquid (2% HNO₃ matrix)
Grade – ICP-MS/OES traceable standard
Application – Elemental analysis, calibration, quality control

Product Overview

The 1000 ppm gold single-element ICP standard is formulated with ultra-high purity gold (99.999% min) dissolved in a 2% nitric acid matrix, ensuring complete solubility and long-term stability for critical analytical applications. This standard is traceable to NIST reference materials and manufactured under ISO 17034/ISO Guide 34 guidelines, guaranteeing accuracy within ±0.5% of the certified concentration. The low-acidity matrix minimizes polyatomic interferences in ICP-MS while maintaining compatibility with most sample preparation protocols. Each batch undergoes multi-point calibration verification using primary standards and is tested for 26 common elemental contaminants (all <1 ppb). The amber HDPE bottle with tamper-evident seal prevents photodegradation and contamination during storage. Ideal for creating intermediate standards or direct calibration, this solution eliminates the need for in-house preparation of gold standards, reducing laboratory variability. The extended shelf life of 24 months when stored at 15-25°C makes it cost-effective for both high-throughput and occasional use scenarios.

FAQs

1. What is the exact gold concentration in this standard?

The standard contains 1000 ppm (±0.5%) gold in a 2% nitric acid matrix, with certification traceable to NIST SRM 3121.

2. Can this standard be used for both ICP-OES and ICP-MS applications?

Yes, the low total dissolved solids and nitric acid matrix make it suitable for both ICP-OES and ICP-MS, though you may need to dilute for ICP-MS to avoid detector saturation.

3. What materials are used for the bottle and cap?

The solution comes in an amber HDPE bottle with a polypropylene screw cap and tamper-evident seal to prevent contamination and light degradation.

4. How should I prepare working standards from this 1000 ppm solution?

For typical applications, perform serial dilution using 2% nitric acid as the diluent. For example, a 1:10 dilution yields a 100 ppm working standard.

5. What’s the difference between this and gold standards in hydrochloric acid?

Nitric acid-based standards like this one have fewer polyatomic interferences for gold analysis (particularly AuCl⁺) compared to hydrochloric acid matrices.