How to Use an Electronic Balance

Summary

This demonstration video explains how to operate an electronic balance. It begins by instructing users to press the 'On/Zero' button until the display shows zero grams, indicating the scale is ready. Two methods for weighing are introduced: using a piece of paper or a weighing boat, with the demonstration focusing on the latter. The video walks through taring the balance, weighing out 0.804 grams of Sodium Acetate, and addressing the slight fluctuations typical in precise measurements. The video concludes by showing how to turn off the balance by holding the 'On/Zero Off' button.

Takeaways

• ⚖️ The demonstration explains the function of an electronic balance.
• 🔄 To turn the balance on, press the 'On/Zero' button until lights appear.
• 💡 The display will run through its functions, and once it shows zeroes followed by the gram symbol, it's ready for use.
• 📝 There are two ways to mass objects on the balance: using a piece of paper or a weighing boat.
• 🚤 In this demonstration, a weighing boat is used for measuring.
• 🧪 To mass 0.75 grams of Sodium Acetate, place the boat on the scale and hit 'Zero' to activate the tare feature.
• 🔢 The tare feature ensures that the weight of the weighing boat is not counted.
• 📊 Fluctuations in the third decimal place can occur due to movement in the room.
• ✔️ In the example, 0.804 grams of Sodium Acetate is measured, precise to the third decimal place.
• 🛑 To turn off the scale, hold down the 'On/Zero Off' button until the display reads 'Off'.

Q & A

What is the first step to operate the electronic balance?

The first step is to push the 'On/Zero' button until you see lights on the display.

What does it mean when you see zeroes followed by the gram symbol on the balance?

It means the balance is ready to be used.

What are the two methods mentioned for massing items on the balance?

The two methods are using a piece of paper or using a weighing boat.

Which method will be used in the demonstration to mass out items?

The demonstration will use a weighing boat to mass out items.

Why is the 'Zero' or tare feature important when using the balance?

The 'Zero' feature ensures that you don’t have to remember or account for the weight of the weighing boat.

What is a typical reason for fluctuations in the third decimal place of the balance reading?

Fluctuations can occur due to movements around the room, which affect the sensitive balance.

How much Sodium Acetate was measured out in the demonstration?

In the demonstration, 0.804 grams of Sodium Acetate was measured.

Why is it important to measure to the third decimal place?

Measuring to the third decimal place provides a higher level of accuracy, which is important in precise measurements.

How do you turn off the electronic balance?

To turn off the balance, hold down the 'On/Zero Off' button until all the lights go off and the display reads 'Off.'

What does the tare feature of the balance help you avoid?

The tare feature helps you avoid having to remember or subtract the weight of the container (such as the weighing boat) from the total weight.