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# What is the uncertainty of a 1ml pipette?

## What is the uncertainty of a 1ml pipette?

In general, the uncertainty of a measurement is determined by the precision of the measuring device. A 1-ml pipette with a graduation of 0.01mL with give an uncertainty of + 0.001, or 10% of the smallest graduation (10% • 0.01 = . 001).

## What is the uncertainty of a pipette?

Uncertainties for Volumetric Glassware

Item Volume (mL) Uncertainty (mL)
Transfer pipette “To Deliver” 2.000 ±0.006
1.000 ±0.006

What is the uncertainty of a 10ml volumetric pipette?

To find the uncertainties and approximate number of significant figures when using volumetric glassware use Table 1. Table 1. Capacity Tolerances for Class A Volumetric Glassware. A 10-ml pipet is listed as 10.00 0.02, which is close enough to 4 significant figures, 10.00 ml.

### What is the precision of a 10 mL volumetric pipette?

volume 10 mL, accuracy: 0.02 mL.

### What is the uncertainty of a 5 mL pipette?

03. Uncertainty for Volumetric Glassware

Glassware Volume in mL ± Uncertainty in mL
Volumetric pipets 1.00 5.00 10.00 25.00 0.01 0.01 0.02 0.03
Volumetric flasks 50.00 100.00 250.0 0.05 0.08 0.10
Buret 50.00 100.00 0.05 0.10
Erlenmeyer flasks 100 250 5 10

How do you find the percent uncertainty of a pipette?

Pipette (Class B) A 25 cm3 pipette has a maximum error of 0.06 cm3 0.06 ÷ 25 = 0.0024 0.0024 x 100 = 0.24%.

#### What is the uncertainty of an instrument?

The “overall” uncertainty in a measurement is the larger value of the two (instrumental or sample). This value is often referred to as the uncertainty in a measurement.