QUIZ: Water Content (EN ISO 12937)

Full Name (VM Number)

Date

1. Need to shake sample vigorously for

• 10 seconds
• 20 seconds
• 30 seconds
• 40 seconds

2. After swirl, need to check for

(you can choose more than one answer)

• Water droplets
• Black particles
• Particulate matter

3. Flush the sample _______________ times before drawing the sample

• One time
• Two times
• Three times
• Four times

4. Inject the needle ________________________ liquid surface in vessel

• Below
• Above

5. How many decimal places for sample weight?

• 1 decimal place
• 2 decimal places
• 3 decimal places
• 4 decimal places

When do we need to monitor the performance of the reagent by injecting 10 μL of distilled water

(you can choose more than 1 answer)

• Immediately after change reagent

• when reagent level in vessel reached 130 mL

• After every 10 injections

What is the signal that indicates we need to change the reagent?

• When the sample yielded higher test results during analysis

• When the solution became cloudy

• When the volume in the vessel reaches one-third of the reagent volume

• Whenever there's a need to replace the solution