If any stains or chemical residues remain after normal cleaning of labware, the glassware should be washed with a cleaning solution such as acid-dichromate.

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Prepare for the ADEQ Water Treatment Levels 1 and 2. Study with tailored questions, in-depth explanations, and interactive quizzes. Elevate your skills and ensure exam success!

Multiple Choice

If any stains or chemical residues remain after normal cleaning of labware, the glassware should be washed with a cleaning solution such as acid-dichromate.

When glassware still shows stains after normal washing, you need a cleaner that can break down stubborn organic films. Acid-dichromate is a strong oxidative cleaner that practically eats away remaining organic residues, turning them into soluble compounds that rinse off, leaving glassware truly clean and ready for sensitive analyses. Other options don’t target organics as effectively: hydrogen peroxide is a milder oxidizer and may leave tougher films, mineral acids like hydrochloric acid remove mineral scale but don’t fully oxidize organics and can risk damage to the glass, and the other suggestion isn’t a standard effective cleaner for this purpose. So the acid-dichromate bath is the best choice for complete removal of residues.

If any stains or chemical residues remain after normal cleaning of labware, the glassware should be washed with a cleaning solution such as acid-dichromate.

Prepare for the ADEQ Water Treatment Levels 1 and 2. Study with tailored questions, in-depth explanations, and interactive quizzes. Elevate your skills and ensure exam success!

If any stains or chemical residues remain after normal cleaning of labware, the glassware should be washed with a cleaning solution such as acid-dichromate.

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