Water Pasteurization and WAPI Concepts

The video demonstrates the use of a Water Pasteurization Indicator (WAPI) to determine if water is pasteurized without a thermometer. The WAPI contains wax that melts at 151°F, indicating pasteurization. The demonstration uses a clear plastic bottle in an oven to show the process. The wax melting to the bottom signifies that the water is safe to drink. The video emphasizes proper WAPI placement and container selection for accurate readings.

What is the primary function of the Water Pasteurization Indicator (WAPI)?

• To boil water quickly

• To measure the pH level of water

• To filter impurities from water

• To determine if water is pasteurized without a thermometer

At what temperature does water pasteurization occur?

• 220 degrees

• 149 degrees

• 100 degrees

• 200 degrees

Why is a clear container preferred for demonstrating the WAPI process?

• It is cheaper

• It allows visibility of the wax melting

• It is more durable

• It heats the water faster

Where should the WAPI be placed in the container for an accurate reading?

• At the top

• At the bottom

• In the center

• On the side

What is the significance of the wax melting in the WAPI?

• It indicates the water is boiling

• It shows the water is pasteurized

• It suggests the water is contaminated

• It means the water is cooling

What is the temperature inside the oven during the demonstration?

• 200 degrees

• 180 degrees

• 150 degrees

• 220 degrees

How long does it take for the wax to melt in the demonstration?

• 1.5 hours

• 2 hours

• 1 hour

• 30 minutes

What is the advantage of using a black container for pasteurization?

• It is more environmentally friendly

• It is more aesthetically pleasing

• It speeds up the pasteurization process

• It is easier to clean

What can be pasteurized using the WAPI method?

• Only bottled water

• Only tap water

• Only creek water

• Both tap and creek water

What is the residue left on top after the wax melts?

• A result of using a clear container

• A sign of contamination

• An indication of incomplete pasteurization

• A normal occurrence