| Ask a Chemist |
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Question: Why is it recommended to add acid when diluting reference standards?
Answer from our Spectroscopist: Addition of acid is recommended to prevent the formation of hydroxides. Hydroxides have a tendency to absorb on the surface of storage containers, autosampler tubes and all parts of the sample introduction system. Hence nebulized aerosol droplets will not be a true representation of the standard itself and will lead to lower intensity which will cause erroneous results. This is true for sample as well standard and one need to match the amount of acid in both the sample and the standard.
If you have a question for our chemists, please ask! |
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| News from SPEX CertiPrep Inorganics |
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Price Increase - The first one in over 5 years.......
For over 5 years SPEX CertiPrep has not had a price increase on any of our products. Unfortunately, we are now faced with having to have a small price increase to help offset some of these very high costs. Effective June 1, 2008, SPEX CertiPrep will have a small price increase on all stock inorganic and organic products. We value your business and hope that you will understand the need to move in this direction. Please contact our sales department at 1-800-522-7739, extension 444 if you have any questions and to find out how to be part of our Loyal Customer Discount Program. It’s a great way to save money.
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New Contamination Control Product: OdorEroder™
The OdorEroder™ contains purple beads in a tray that oxidize and neutralize offensive odors and fumes. The tray is placed where odor-causing chemicals in the air passes near the purple beads trapping the chemicals inside and on the surface of the beads, thus eliminating the odors. As the purple beads react, they turn brown. Under normal conditions, the OdorEroder lasts up to two to three months. It is a non-toxic, environmentally safe product that is effective throughout a variety of areas including laboratory areas, hoods, waste disposal areas, chemical storage areas, etc. Click here to order! |
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Avoiding the "Class A" Pipette Incident
Recently, our chemists discovered a grave error in Class A pipettes manufactured by a very reputable manufacturer. Our new consignment of 25mL pipettes only delivered 20mL, even though each pipette was labeled 25mL and only differed very slightly in size and shape from the 20mL pipettes. If our Quality Control department did not have such rigorous standards and had not checked each pipette before use, all our standards would have had a 20% error. Thankfully, our protocol does not allow us to just assume glassware and other items are good because they are manufactured by a reputable company, it demands we check and assess before using. We, at SPEX CertiPrep, pride ourselves on delivering quality and accuracy when making our standards by taking the extra necessary steps. Kudos to our Quality Control department for doing such through and meticulous work!
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Price Increase for Claisse Fusion Flux
Effective April 1, 2008, all Claisse Fusion Flux and Additives will have new prices. For a copy of the new price list, please contact us at CRMSales@spexcsp.com.
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Loyal Customer Discount Program
SPEX CertiPrep values its customers. We know that without our loyal customers we would not be the leading manufacturer of Certified Reference Materials. By purchasing your inorganic and organic certified reference materials from SPEX CertiPrep you can be part of a program that gives you automatic discount off of all our manufactured products. Learn more about the Loyal Customer Program. |
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A2LA Accreditation for Inorganic and Organic CRMs
SPEX CertiPrep, Inc. is proud to be accredited by A2LA for both Organic and Inorganic Certified Reference Materials (CRM). Now in addition to being registered as an ISO 9001:2000 facility, SPEX CertiPrep is accredited by A2LA as complying with the requirements of ISO/IEC 17025:2005 and ISO/IEC Guide 34-2000. The scope of our accreditation is the most comprehensive in the industry and encompasses all of the products SPEX CertiPrep manufactures. This new milestone establishes our continuing dedication to our customers for providing the highest quality standards. As always, SPEX CertiPrep wants to ensure Total Customer Satisfaction that’s why our motto has always been Superior Quality and Unparalleled Service.
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Impacts of US EPA Methods Update Rule (MUR) on NJPDES Permits
The US EPA has issued a final MUR that modifies the list of approved analysis and sampling procedures for wastewater regulations. These updates will have significant effect on the current test procedures for the analysis and sampling for pollutants in wastewater and sludge. As of now, a number of analysis methods have been replaced by alternate more up-to-date methods. In addition, a large number of new test methods have been added. These new changes may impact your laboratory’s certification and may require changes in your laboratory’s procedures. To learn more on these changes, go to www.state.nj.us/dep/dwq/pdf/MUR_Impact.pdf.
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ICP, ICP/ICP-MS, and ICP-MS Grade Certified Reference Materials Is There Really a Difference?
A blind laboratory study was conducted to compare standards obtained from various manufacturers of certified reference materials. There are two goals for this study: First to objectively determine if a difference exists between an ICP grade standard and an ICP-MS grade standard and second to focus on the equivalency of the ICP-MS grade standard to the ICP/ICP-MS grade of standard. Read the Study. |
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| SPEXertificate |
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Are you Impurities Vulnerable (IV)? We list impurities on all of our certificates. Does your supplier do that? SPEXertificates are now available online. Search by Part Number and Lot Number for a quick, printable copy of your SPEXertificate.
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Save time by printing your MSDS directly from our website. Search our database by product, part number or element.
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It doesn’t get any easier than this! Earn reward points or, "SPoints" on every order you place. Redeem them for great prizes throughout the year!
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