To test the dissolution time of polyacrylamide (PAM), you can follow these steps:

1. Prepare a known volume of water or the solvent in which you plan to dissolve the PAM. It's important to measure the volume accurately for consistent results.

2. Heat the water or the solvent to a specific temperature, if required. Some PAM formulations might require elevated temperatures for efficient dissolution. Check the specifications or guidelines for the particular PAM you are using.

3. Slowly add the PAM powder to the water or solvent while stirring continuously. The stirring can be done manually using a glass rod or by using a magnetic stirrer.

4. Observe the PAM powder as it dissolves in the solution. Note the time it takes for the PAM to completely dissolve. You can consider it dissolved when there are no visible clumps or particles remaining.

5. Repeat the experiment multiple times to ensure consistency and accuracy. Take note of any variations in the dissolution time and average the results for better reliability.

It's worth mentioning that the dissolution time can be affected by various factors such as temperature, concentration of the PAM solution, and the specific formulation of the PAM. Therefore, it's crucial to maintain consistent experimental conditions when comparing different samples or performing subsequent.