We run mass spec and PAGE analysis on every oligo ordered as part of our quality system. The PAGE analysis allows qualitative assessment and mass spec confirms identity. An HPLC or gel densitometry is required for quantification of purity. HPLC and other analytics can be requested at the time of order. If you are not sure which analytical would be best for your requirement, just ask!

In regards to the DNP-TEG labeled oligonucleotides, we recommend requesting an AX-HPLC analysis.