18
Learning Center
NanoDrop One Viewer Software
Thermo Scientific
NanoDrop One User Guide
279
Factor or Extinction
coefficient at 1 cm
pathlength (Formula
methods only)
Specify whether to use factor or extinction coefficient to calculate concentration
result:
•
User-defined factor
. Enter
factor
for 1 cm pathlength and use adjacent drop
down list to select appropriate
unit
. Equation below shows how factor is used to
calculate sample concentration:
c = (A * f) / b
where:
c
= analyte concentration
A
= absorbance in absorbance units (A)
f
= factor (typically 1/
, where
= wavelength-dependent molar absorptivity
coefficient, or extinction coefficient)
b
= pathlength in cm (determined at measurement time, then normalized to
10 mm (1 cm) pathlength equivalent)
•
Extinction coefficient and molecular weight
. Enter
extinction coefficient
for
1 cm pathlength and use adjacent drop down list to select appropriate
unit
.
Equation below shows how extinction coefficient is used to calculate sample
concentration:
c = A / (
* b)
where:
c
= analyte concentration
A
= absorbance in absorbance units (A)
= wavelength-dependent molar absorptivity coefficient (or extinction
coefficient)
b
= pathlength in cm (determined at measurement time, then normalized to
10 mm (1 cm) pathlength equivalent)
Setting
Available Options
Summary of Contents for NanoDrop One
Page 18: ......
Page 28: ......
Page 58: ......
Page 144: ......
Page 152: ......
Page 159: ...16 Measure UV Vis Thermo Scientific NanoDrop One User Guide 153 ...
Page 160: ...16 Measure UV Vis 154 NanoDrop One User Guide Thermo Scientific ...
Page 294: ...18 Learning Center Multimedia 288 NanoDrop One User Guide Thermo Scientific ...
Page 314: ...19 Maintenance Instrument Diagnostics 308 NanoDrop One User Guide Thermo Scientific ...
Page 328: ...7 Technical Support 314 NanoDrop One User Guide Thermo Scientific ...