Understanding the Spade Device

This instructional video by Steve from Hydr Missions International introduces solar pasteurization and the Spade device, a solar pasteurization detector. It explains the historical context of pasteurization, highlighting that 65°C is sufficient to kill harmful pathogens. The video details the Spade's design, usage with water bottles and buckets, and how to create a pasteurization station. The Spade is reusable, durable, and provides a cost-effective solution for clean water in resource-limited areas.

What was the traditional method believed to disinfect water before solar pasteurization was considered?

• Filtering

• Boiling

• Using chemicals

• Freezing

What is the primary material used in the construction of the Spade device?

• Polycarbonate

• Metal

• Plastic

• Glass

At what temperature does the wax in the Spade device start to melt?

• 150°F

• 165°F

• 170°F

• 160°F

What is the purpose of the wing nut in the Spade device when used with a water bottle?

• To filter the water

• To seal the bottle

• To weigh the capsule

• To measure water level

What is the recommended method to increase the effectiveness of solar pasteurization?

• Using a larger bottle

• Adding more wax

• Creating a pasteurization station

• Using a different type of wax

What is the main benefit of painting the corrugated metal black in a pasteurization station?

• To make it more durable

• To increase heat intensity

• To make it aesthetically pleasing

• To protect it from rust

What is a key advantage of the Spade device in terms of its usability?

• It is single-use

• It is biodegradable

• It is disposable

• It is reusable

Why is the Spade device considered durable?

• It is made of polycarbonate

• It is made of glass

• It is made of plastic

• It is made of metal

What is the significance of the Spade device's compactness?

• It reduces its effectiveness

• It allows for easy storage and transport

• It makes it more expensive

• It limits its usage

What is the main purpose of using an indicator like the Spade in solar pasteurization?

• To measure the water's pH level

• To filter the water

• To ensure the water reaches the right temperature for the right time

• To guess the water temperature