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ROMIL-SpA™ Super Purity Acids and Reagents

A Part Per Billion - A Blade of Grass on a Football Field !

Today's users of pure acids and reagents in trace inorganic analysis well understand the importance of minimal background impurities. So think of a blade of grass on a football field. That's a part per billion, the level to which elemental impurities are controlled in ROMIL‑SpA™ Super Purity Acids and Reagents.

And with environmental issues at the forefront of modern analytical investigations analysts acknowledge the need for such low levels of contaminants. For them, ROMIL‑SpA™ Super Purity Acids and Reagents provide a practical solution by combining very high purity at a reasonable cost.

Whereas other reagent suppliers simply batch select or distil their acids by traditional boiling, ROMIL‑SpA™ Super Purity Acids are purified by sub-boiling distillation.

What is it that's so special about this technique that it imparts a greater purity to the finished product than traditional methods? Just look at the diagram. The secret lies in the smooth surface and fine vapour that is maintained over the liquid surface at a temperature just below the boiling point. This avoids the violent agitation and large scale mass transfer of contaminants that is inevitable with conventional distillation.

To maintain such low levels most of the ROMIL‑SpAproducts are packaged in pre-cleaned polyethylene bottles (pre-cleaned glass bottles for perchloric acid).

Whether the instrumental application is atomic spectroscopy (AAS, GFAAS, ICP‑OES, ICP‑MS), ion chromatography or voltammetry, ROMIL‑SpA products are the ideal tools for today's routine inorganic trace analysis.

  • Inductively Coupled Plasma (ICP-OES, ICP-MS)

    With key metal concentrations below 1 ppb, ROMIL‑SpA acids are an economical solution to sample preparation in high throughput qc analysis. For the most demanding applications we recommend the use of ROMIL‑UpAproducts where metal concentrations are controlled to ppt levels - like a leaf in a forest.
  • Atomic Absorption (AAS, GFAAS)

    Whilst now overshadowed by faster and more sensitive ICP techniques, atomic absorption spectrometry is still the main tool for trace metal determinations in many smaller analytical laboraories. Use of ROMIL‑SpA acids in sample preparation contributes to trouble-free analysis thus ensuring the continued popularity of this relatively simple technique for many years to come.
  • Ion Chromatography (IC)

    Although now a well established technique, ion chromatography never really caught on in the analysis of metals due to the popularity of the spectrometric techniques. In analysis of anions, however, ion chromatography reigns supreme. The same purification techniques that control metal ions in ROMIL‑SpA acids also have the same effect on anionic species which means that sample preparation can be undertaken free from otherwise interfering background impurities.
  • Voltammetry

    Also known in the past as polarography, this technique remains popular as a low capital cost entry into trace analysis. Sensitivity is similar to that for ICP with the further advantage that different oxidation states of elements can be identified. Not only can metal ions be determined but also some anions and organic compounds. Samples with high ionic concentration are also not a problem for voltammetry. With the availablity of ROMIL‑SpAproducts for sample preparation, this technique continues to see an increase in popularity.
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