Efficient cleaning coupled with high productivity

Cleaning various items used in ultra-trace analysis work is a critically important laboratory routine. To minimize contamination, traditional cleaning methods require soaking items in hot acids, often for several hours. To be effective large volumes of acid are consumed and need to be changes regularly. There is also a substantial risk of exposure to hot acids and acid vapors using traditional soaking techniques.
To address these issues, Milestone has developed the traceCLEAN, a fully automated, self-contained, acid steam cleaning system for trace metal analysis accessories. The cleaning process with the traceCLEAN takes about an hour, enhancing the overall lab workflow. Digestion vessels, ICP accessories, volumetric flasks, and other glassware can be cleaned, even multiple times during a day.
  • Versatile
    For all laboratory apparatus, either TFM, glass and quartz parts
  • Fully automated and safe
    No operator exposure to acid vapors.
  • Highly productive
    Fast, convenient, clean, and fully automated.
  • Cost-effective and productive
    No changing of acids or soaking required.
preventing workflow disruptions


Look beyond sample digestion and consider the total sample preparation workflow for elemental analysis. Find ways to avoid workflow disruptions that have negative effects on your lab’s outcomes. Consider several parameters like reagents handling, cleaning approach, supply of ultrapure acids and the handling of digestion vessels.

“In trace analysis the effects of contamination from laboratory air or furnishings, apparatus, containers, and reagents have become increasingly important, as the sensitivity of analytical methods has lowered detectable limits to the nanogram and picogram level”.

M. Zief, J. W. Mitchell, Contamination Control in Analytical Chemistry

How traceCLEAN Works

Traditional cleaning methods require several hours and occupy valuable space in the fume hood. The traceCLEAN process ensures greater cleaning efficiency through freshly distilled hot vapours of nitric acid that leach metal contaminants from the items. Place the items to be cleaned in the traceCLEAN, through the rotating design of the holder, which simplifies the introduction and removal of all items. Select the program or create a new one and press “Start” on the touch screen terminal.

Compare acid steam cleaning to acid leaching

The container to be cleaned is placed over a PTFE coated glass rod. Acid in the lower reservoir is heated, and purified acid vapor travels up through the glass rod and condenses on the container, removing surface contamination. This method of cleaning is a preferred alternative to the soaking preconditioning methods for the following reasons:
  1. The trace metal contamination found in the reagent grade acid remains in the lower reservoir and does not come in contact with the component to be cleaned.
  2. The clean component does not remain in contact with the cleaning acid after the surface contamination is removed.
  3. The critical surfaces of the clean component are dry when the cleaning process is complete. This eliminates the need for rinsing and air drying.
  4. The cleaning process takes place in a sealed container which minimizes airborne contamination and provides a clean environment for the components to be stored until they are needed.

Real-life experiences and successes

  • Get the best quality to cost ratio of ultrapure acid

    Albhades lab profile
    The Albhades laboratory offers multidisciplinary analysis in the healthcare field (pharmaceutical, cosmetics and medical instrumentation. The labor...
  • Lower costs and increase ROI for water testing labs

    EPAL lab profile
    Empresa Portuguesa das Águas Livres (EPAL) supplies water to approximately three million people. EPAL purchased an ICP-MS to perform trace metals a...
  • Lower costs and increase productivty for environmental studies

    IMEDEA Spain lab profile
    The Mediterranean Institute of Advanced Studies (IMEDEA) and the Marine Science Institute of Andalusía (ICMAN) are prestigious research centers bel...
  • On-demand acid purification for geochemistry research and teaching

    Oregon State University lab profile
    The Keck Lab at Oregon State University, is a world-class teaching and research analytical facility that specializes in the development, applic...

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

  • Determination of Vanadium in Urine by Electrothermal Atomic Absorption Spectrometry Using Hot Injection and Preconcentration Into the Graphite Tube

    K. G. Fernandes et al.

  • Use of microwave-assisted evaporation for the complete recovery of volatile species of inorganic trace analytes.

    Skip Kingston et al.

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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