products, news and tips:
JULY 2009 |
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| News from the Lab |
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Record-breaking Turnaround
Our
current average turnaround time is 1.09 days. And that average includes
all custom blends. It's just one of the many ways in which we flex to your specs. Request a quote today!
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Three ISO Accreditations
For
almost a decade, Inorganic Ventures has been accredited to ISO/IEC
Guide 17025, ISO/IEC Guide 34, and ISO Guide 9001:2000. Recently, our
laboratory was audited by both A2LA and QMI and our scopes and certifications were reissued. Details »
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Analytical Quick Tip
Try using HCl rather than HNO3 as the matrix acid for Hg+2 measurements using ICP-OES or ICP-MS. Stability of ppb level solutions is better and washout is faster.
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Two Methods for CRM Certification
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'Confirm, Confirm, Certify. Verify, Never Assume
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According to ISO Guide 34:2000, a number of requirements exist for the certification of CRMs. The use of two independent methods is strongly suggested. The two methods should include one that is a 'primary' method. The second method can be secondary, but both methods must be validated, executed with a known QC standard, and compared using a statistical procedure that would determine if the means agree or disagree (independent method student T test).
In our case, agreement of the two methods is a requirement for release of the product. This agreement demonstrates the accuracy of the standard. The requirement of traceability to the International System of Units (SI) is where the use of one method (rather than the average of two) comes in for the purpose of reporting a certified value. The traceability requirement necessitates that the uncertainty be reported using ISO guidelines (Guide 35). The uncertainty calculation includes all sources of random and systematic error and must be 'provable' with an error budget and clear presentation of errors involved in the preparation of the CRM.
Consequently, a choice is left to the manufacturer as to which method to use for certification. It is common practice to use the method that has the lower uncertainty. The validity of this approach rests upon the accuracy of the uncertainty calculation, the inclusion of all possible sources of error, and a demonstration that the two methods used have Means that are statistically in agreement.
In short, there is no mathematical way of writing an equation that would make scientific sense from a traceability perspective based on an average of uncertainties.
 No assumtions are made by Inorganic Ventures in the manufacture of any of their products. Stability, homogeneity and of course certified value with expressed uncertainties are verified before the release of any standards.
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Articles Online
Reliable Measurements: A Guidebook for Trace Analysts · COMPLETE ·
An
essential 17-part online guide for chemical analysts. Topics cover all
phases of sample collection, preparation, measurement, and data
analysis.
ICP Operations Guide
A clear 16-part online guide intended for anyone preparing samples and standards for measurement using ICP. Topics cover many day-to-day tasks required by all operators.
Sample Preparation Guide
This Guide is intended to provide specific and highly detailed information about certain elements in regards to sample preparation. |
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Inorganic Ventures' credentials are an important part of their Quality Assurance program.
Review the six credentials that accredit the company to every nationally and internationally recognized Quality Management System.
ISO Guide 34:2000
ISO 17025:1999
ISO 9001:2000
MIL-STD 45662A
10CFR50 Appendix 'B'
10CFR21 |
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Inorganic Ventures is a chemical Certified Reference Material (CRM) producer that specializes in preparing custom inorganic standard solutions designed for a variety of applications. These include ICP, ICP-MS, Ion Chromatography, and Atomic Absorption. Additionally, they produce a wide selection of QC water standards, as well as reference materials for wet chemical applications.
For almost a decade, Inorganic Ventures has been fully registered to ISO 9001:2000, ISO/IEC 17025, and ISO/IEC Guide 34. These key international accreditations have helped Inorganic Ventures to excel in both the caliber of their products and the quality of their customer service.
Leading the industry
- 1st to perform trace metals analysis on final products.
- 1st to calculate a Certified Value based on two independent assays to two different NIST SRMs.
- 1st to use LDPE plastic bottles for packaging to maintain product purity.
- 1st chemical solutions manufacturer to be accredited to ISO Guide 34-2000.
- 1st and ONLY CRM manufacturer to offer a 100% Satisfaction Guarantee.
Inorganic Ventures is situated in a state-of-the-art laboratory located in Christiansburg, Virginia, USA. Inorganic Ventures' manufacturing laboratory is designed to be contamination-free during every stage of production.
Most foreign orders are shipped from their European distribution center in Madrid, Spain.
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| Product Showcase |
Instrument Setup Standards
- We've expanded our line of instrument setup standards to service even
more brand-name ICP & ICP-MS instru-ments. All standards are
NIST-traceable and conveniently shipped the day they're order-ed.
Additionally, custom setup standards are available upon request.
• In-Stock Standards »
• Custom Quotations »
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| Elemental Spotlight |
Vanadium
Storage & Handling:
Keep tightly sealed when not in use. Store and use at 20 ± 4°C. Do not
pipet from container. Do not return portions removed for pipetting to
container.
Chemical Compatibility: Soluble in HCl, HNO 3, H 2SO 4, HF, H 3PO 4, and strong basic media. Stable with most metals and inorganic anions in acidic media.
Stability: 2-100 ppb levels stable for months in 1% HNO 3 / LDPE container. 1-10,000 ppm solutions chemically stable for years in 1-5% HNO 3 / LDPE container.
V Containing Samples (Preparation & Solution): Metal (fusion with NaOH or KOH in Ni 0 or Na 2CO 3 / KNO 3); Oxides (V 2O 3 - use HCl; V 2O 4 - use HCl or HNO 3; V 2O 5 - use conc. acids); Ores (Na 2CO 3 / KNO 3 in Pt 0 ( caution - nitrates attack Pto) followed by water extraction of fuseate); Organic Matrices (ash at 450°C followed by dissolving according to V 2O 5 above).
Excerpt from Inorganic Ventures' Analytical Periodic Table: Includes detailed analytical data for more than 70 elements.
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