What is an alternative methods to chromic acid for cleaning glassware?

Initially, Regulations greatly restrict the disposal of chromic acid cleaning solutions due to their heavy metal content and low pH and EHS organization encourages the use of substitutes for chromic acid, so EHS organization recommend that users choose an alternative that: - Removes desired contaminants from glassware.
- Is safe to handle, i.e., noncorrosive and nonirritating to skin and eyes.
-Does not qualify as a hazardous waste after use due to corrosivity (pH 12.5) or heavy metals content.
-Is compatible with the containment device.
Many concentrated acids (e.g.,60 percent sulfuric acid) will cause rapid destruction of high density polyethylene (Nalgene®).
Some products used instead of Chromic acid:- • Alconox or similar detergents, • Pierce RBS35 or similar detergents, • potassium hydroxide ethanol, • hydrochloric acid, • oxidizing agents without chromium or other metals, • potassium permanganate sulfuric acid.
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