Question

Lab analysis of pH, temperature, and dissolved oxygen should be performed within _____ minutes of sample collection since they can change rapidly once collected.

A) 15 minutes
B) 30 minutes
C) 60 minutes
D) 90 minutes
E) 120 minutes

Answer 1

Lab analysis of pH, temperature, and dissolved oxygen should be performed within 30 minutes of sample collection since they can change rapidly once collected.

Step-by-step explanation:

Lab analysis of pH, temperature, and dissolved oxygen should be performed within 30 minutes of sample collection since they can change rapidly once collected. This is because these parameters are influenced by various factors such as microbial activity, chemical reactions, and atmospheric exposure.