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7
Custom Applications
Measure Custom
Setting
Formula table (optional)
Formula rules
166
NanoDrop One User Guide
Available Options
Use the Formula table to specify additional reported results, such as a purity
ratio, for each sample.
Available options:
• Predefined. Select from a list of predefined formulas, which can be
used as is or edited, and choose Add. The predefined formula is listed in
the Formula Table.
• Add. Create formula for current method. Available options:
• Formula Name. Enter a name for the formula. After a
measurement, the name is reported in Data Table and Sample Details
screens.
• Formula. Enter valid formula (see below for rules and examples).
After a measurement, the measured or calculated value is reported in
Data Table and Sample Details screens.
• Unit. Enter unit for reported result. After a measurement, the unit is
reported in Data Table and Sample Details screens.
• Edit. Edit selected formula for current method.
• Delete. Delete selected formula from current method.
Custom formulas can include the following operators and functions:
• Path(). Returns sample pathlength in cm.
• A(nm). Returns sample absorbance at specified wavelength (for
example, enter A(650) to add the measured absorbance at 650 nm to
your equation).
• Operators: + (add), - (subtract), * (multiply), / (divide).
• Functions: Log(x), Pow(x,y).
Notes: Follow these additional rules for all languages:
• Use period "." decimal separators for floating point and double-floating
point numbers.
• Use comma "," list separators (for example, "POW(2,8)").
• Do not use comma "," group separators for large numbers (for example,
enter 1000 rather than 1,000).
Thermo Scientific
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