摘要:
A method for purifying a protected oligonucleotide comprising the steps of: a) providing a solution of the protected oligonucleotide in at least one solvent A having a boiling point below the boiling point of a solvent B, heating the solution at a temperature of at least 30° C. and below the boiling point of the at least solvent A, adding solvent B until precipitation of a material is visible in the solution, said solvent B being an alcohol having 1 to 6 C-atoms or a diol having 2 to 6 C-atoms, allowing the solution to cool down under stirring until formation of a supernatant and a residue, removing the supernatant or b) providing solvent B, said solvent B being an alcohol having 1 to 6 C-atoms or a diol having 2 to 6 C-atoms, heating solvent B at a temperature above 30° C. and below the boiling point of solvent B, adding a solution of a protected oligonucleotide in at least one solvent A until precipitation of a material is visible in the solution, allowing the solution to cool down under stirring until formation of a supernatant and a residue, removing the supernatant.
摘要:
The invention relates to a developer unit for an electrophotographic printing device for printing on glass or ceramic material having a toner supply and a magnetic roll (22) for applying toner to a photoconductor (10), which is connected to a substrate to be printed, directly or with the interposition of a transfer device (20). According to the invention, a conditioning medium (24) for transferring the toner acts between the magnetic roll (22) and the photoconductor (10).
摘要:
The invention relates to a developer unit for an electrophotographic printing device for printing on glass or ceramic material having a toner supply (30, 32) and a toner application device (38), toner being discharged onto a developer device (18) by means of the toner application device (38) and it being possible for the developer device (18) to be brought into flat contact with a photoconductor (10). According to the invention, the developer device (18) has a fibre coating (19) of electrically conductive fibres, which picks up the toner and is in contact with the photoconductor (10) in order to transfer the toner.