Description
Specifications Table
Product Name – Strontium, plasma standard solution, Specpure®, Sr 10,000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid (1-5% HNO₃ matrix)
Grade – Specpure® (Ultra-high purity, 99.999% trace metal basis)
Application – ICP-OES, ICP-MS, AAS calibration; environmental/toxicology testing; geological sample analysis
Product Overview
This Specpure® Strontium plasma standard solution delivers 10,000µg/ml (1% w/v) strontium in a stabilized nitric acid matrix, engineered for superior accuracy in atomic spectroscopy applications. The ultra-high purity grade (99.999% trace metal basis) ensures minimal interference from alkaline earth contaminants, critical for low-ppb detection limits in ICP-OES, ICP-MS, and flame/furnace AAS systems. The solution is prepared using Specpure® reagents—meticulously purified through sub-boiling distillation—to eliminate particulate and ionic impurities that could skew calibration curves. Each batch undergoes multi-point verification against NIST-traceable reference materials, with certificates of analysis provided for lot-specific concentration values. The 1-5% HNO₃ matrix maintains long-term stability (shelf life: 24 months unopened) while preventing strontium precipitation or adsorption to container walls. Compatible with autodilution systems, this standard eliminates the need for manual serial dilutions, reducing laboratory error. The amber HDPE bottles with tamper-evident seals protect against photodegradation and contamination, ensuring consistent performance from first to last use. Ideal for laboratories requiring ISO 17025-compliant calibration standards for environmental monitoring, geological surveys, or clinical toxicology workflows.
FAQs
1. What is the exact nitric acid concentration in this Strontium standard solution?
The matrix uses 1-5% ultra-pure nitric acid (trace metal grade) to stabilize the 10,000µg/ml Sr concentration without introducing spectroscopic interferences.
2. Can this standard be used directly for ICP-MS analysis without further dilution?
Direct use is not recommended for most ICP-MS applications due to the high 10,000µg/ml concentration, which may exceed the linear range of the instrument. A 1:1000 dilution is typically required for ppb-level analysis.
3. How does the Specpure® grade differ from standard analytical-grade strontium solutions?
Specpure® undergoes additional sub-boiling distillation and zone refining steps to remove refractory metal impurities (e.g., Ba, Ca, Mg) that standard grades retain, enabling <0.1% relative standard deviation in calibration curves.
4. What container material is used, and is it compatible with automated sampling systems?
The solution is packaged in HDPE bottles with PP caps, both of which are compatible with most autodiluters and autosamplers. The bottles are pre-cleaned with 10% HNO₃ to minimize leachable contaminants.
5. Is this standard suitable for strontium isotope ratio analysis (e.g., ⁸⁷Sr/⁸⁶Sr measurements)?
While the solution provides accurate total strontium concentration, it is not certified for isotopic composition. For isotope ratio work, a strontium standard with certified isotopic abundances (e.g., NIST SRM 987) is required.
