Which preservation guideline applies to Odor samples before analysis?

Enhance your skills with the CWEA Grade 2 Lab Analyst Test. Study with flashcards and multiple choice questions, each offering hints and explanations. Prepare successfully for your exam!

Multiple Choice

Which preservation guideline applies to Odor samples before analysis?

Explanation:
Odor samples are volatile and can change quickly if left untreated, so the preservation focus is to analyze them as soon as possible and, if that isn’t feasible, keep the sample cold (0–6 °C) and analyze within a 24-hour window (with a shorter 6-hour target when possible). This minimizes loss of volatile compounds and changes due to microbial activity or evaporation. The best guideline reflects both urging rapid analysis and proper refrigeration when immediate analysis isn’t possible. Options that call for immediate analysis in an unrealistically short time, or for chemical additions like sulfuric acid, or for long storage—would not protect the odor profile effectively.

Odor samples are volatile and can change quickly if left untreated, so the preservation focus is to analyze them as soon as possible and, if that isn’t feasible, keep the sample cold (0–6 °C) and analyze within a 24-hour window (with a shorter 6-hour target when possible). This minimizes loss of volatile compounds and changes due to microbial activity or evaporation. The best guideline reflects both urging rapid analysis and proper refrigeration when immediate analysis isn’t possible. Options that call for immediate analysis in an unrealistically short time, or for chemical additions like sulfuric acid, or for long storage—would not protect the odor profile effectively.

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