QUIZ:Clean and Feed

Why is it important to clean the density meter thoroughly between each sample? *

It prevents the instrument from overheating

It ensures accurate and reproducible measurements

It helps the screen stay bright and readable

It makes sample injection easier

What is the recommended drying rinse after cleaning with water? *

Distilled water

Soap and water

95% ethanol or acetone

Toluene

What should be used to clean the U-tube after measuring petroleum-based samples like fuels or lubricants? *

Acetone and water only

Soap and water

Hexanes, toluene, or xylene

Vinegar and baking soda

What is the ideal air density reading (at 20°C and sea level) for a clean U-tube on the 2911 Plus? *

1.000000 g/cm³

0.000000 g/cm³

0.001210 g/cm³

0.998203 g/cm³

When cleaning with soap and water, what temperature should the instrument be set to for best results? *

10°C

20°C

30°C

40°C

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