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Glass Expansion News June 2013

NEWS New DuraMist™ Inert Nebulizer The DuraMist nebulizer was added to the product line in 2011. The DuraMist is a new model of HF-resistant nebulizer (up to 5% HF), providing excellent sensitivity and precision at an affordable price. It is a concentric, self-aspirating nebulizer and is compatible with all ICP models. Its ability to run samples with up to 30% total dissolved solids without blockage makes it an effective universal nebulizer. The strength and rigidity of the PEEK material allow the DuraMist to be manufactured to very tight tolerances, enabling it to approximate the performance of our SeaSpray nebulizer, the worldwide market-leading high performance glass nebulizer. The DuraMist is shown in Figure 6 and a detailed summary of its performance can be found in the October 2011 Newsletter. Figure 6: DuraMist inert nebulizer Nebulizer Selection This section will briefly summarize the characteristics of each Glass Expansion nebulizer. When selecting a nebulizer for a specific application, you should consider a number of characteristics as follows: • Tolerance to total dissolved solids (TDS) • Tolerance to particulates • Tolerance to hydrofluoric acid (HF) • Precision • Purity • Robustness • Material Table I compares all Glass Expansion nebulizers with respect to these characteristics. Nebulizer TD S (%) Particulates (μm) HF Precision Purity Robustness Material Conikal 5 75 No High Good Good Glass SeaSpray 20 75 No High Good Good Glass MicroMist 15 40* No High Good Good Glass Slurry 1 150 No High Good Good Glass OpalMist 15 75* Yes High Excellent Good PFA PolyCon 5 75* Yes High Good Good Polyimide DuraMist 30 75* Yes High Good Good PEEK Ceramic VeeSpray 30 300 Yes Moderate Good Excellent Ceramic * Varies with nebulizer uptake Table 1: Comparison of Glass Expansion nebulizers. All of these characteristics were considered when designing our helpful (and popular) Nebulizer Selection Guide (Figure 7). Following this flow chart will help the ICP analyst choose the most suitable nebulizer for a specific application. We also now have an interactive selection guide, compatible with your iPhone, iPad and Android devices, which can be downloaded for free from the Apple App Store or Google Play. Like the flow chart, this application will select the nebulizer (and spray chamber) that will provide the best performance, but it will also provide you with a photo and P/N of the nebulizer suitable for your model ICP-OES or ICP-MS. www.geicp.com Glass Expansion Newsletter | Issue 31 | page 3


Glass Expansion News June 2013
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