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Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

Should I only be concerned about sodium ions when calculating Tm?

Any charge will play a role in the Tm value for an oligonucleotide in a reaction. Thus, sodium, magnesium, and potassium concentrations each contribute to this calculation.

The IDT OligoAnalyzer® tool will calculate Tm for you, taking into account the presence of specific ions in the reaction buffer. Find this program under the "SciTools®" tab of the IDT website.

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