Make your own ultrapure acids

Sub-boiling distillation has been demonstrated to be the best method and the most effective approach in acid purification. Offering an optimal purification method for preparation of high purity reagents, this type of acid distillation uses contactless infrared lamps to vaporize the surface liquid at a temperature typically 20°C below the boiling point. The duoPUR allows the purification of the most common acids such as HNO3 and HCl.
In contrast to conventional distillation systems, where strong boiling action generating aerosolized particles results in contamination of the original liquid with the distillate, the duoPUR acid purification system using sub-boiling technology provides gentle surface evaporation preventing the formation of spray or droplets and yields to ultrapure acids.
The duoPUR offers an alternative to the purchase of expensive high purity acids for trace elemental analyses.
  • Up to 90% cost saving of ultrapure acids
  • High productivity, up to 400 mL per hour with duoPUR
  • ‘On-demand’ acid distillation
  • Single or double distillation upon on requirements
duoPUR

“In the preparation of high purity reagents, there is only one significant and practical choice for the method of purification: sub-boiling distillation"
US EPA SW-846, Chapter 3, Update IVB.

Why sub-boiling technology?

The chemical reagents used during the analysis are an important source of the analytical blank. Sub-boiling distillation has been demonstrated to be the best method of acid purification. It uses contactless infrared lamps to vaporize the surface liquid at a temperature typically 20°C below the boiling point. In contrast to conventional distillation, where strong boiling action generating aerosolized particles results in contamination of the original liquid with the distillate, a gentle surface evaporation during sub-boiling distillation prevents the formation of spray or droplets and yields to a very high pure acid.
Sub-boiling technology

duoPUR Quartz sub-boiling system

The duoPUR consists of two quartz distillation units. Each unit contains two infrared heating elements (1), a water cooled condenser (2), a high-purity PFA collection bottle (3), and a fully automatic acid loading/discharge system. The vaporized liquid is collected on the inclined water-cooled condenser and drips into the collection bottle. The distillation process is microprocessor controlled, allowing the user to set the distillation time and power level by using a compact control terminal with easy-to-read, bright, full-color, touch-screen display. The distillation rate ranges from 50 to 400 mL per hour, depending on the power setting and the temperature of the cooling water.

Do you know how to reduce the sample prep blank?

Read our book! It explains how a laboratory can reach full control of analytical blanks and sample preparation for obtaining accurate results. The application of instruments and strategies to control sample prep blank is often called a “Clean Chemistry” technique. This book discusses the factors impacting blank quality, in particular when microwave digestion is used, and reviews some Clean Chemistry products and technologies designed to help the analyst generate superior analytical data on their ICP-OES or ICP-MS instrumentation.

How Much Will Sub-Boiling Distillation Save You Each Month?

Scientific Papers

A very large scientific library based on how to control the analytical blank is now available for your review.
  • What it takes to achieve the low analytical blanks necessary to produce good ICP/ICP-MS data.

    Tim Michael, Don Potter

Scientific Papers

A very large scientific library based on how to control the analytical blank is now available for your review.
  • What it takes to achieve the low analytical blanks necessary to produce good ICP/ICP-MS data.

    Tim Michael, Don Potter

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