It is often not possible for us to date a document absolutely. Nevertheless, each case is individual and so we advise that you contact us to discuss your requirements. For example, we can examine the document and give an indication of the type of ink used – this type of ink may not have been available at the time the document was purportedly made. We can also examine entries in books, and we may be able to give an indication as to whether they were written in chronological order. We do not have the facilities to examine inks using chemical analysis or specialised lighting techniques.