Here's the rub. I don't want it for printing on! It is cut into small squares and folded 4 times to make sachets for powdered medicine. Thats why I need a thin grade 40 or 50 grams per square metre, also it is impregnated with alcohol containing the medicine which is why I need a non-chlorine beached grade, also without the UV brighteners that are in normal paper to make it look whiter.I have found that the UV dyes dissolve in the alcohol and migrate to one corner of the paper and create a blue stain. Biblio paper is a special thin but strong grade of paper that is used for printing books that have many pages and need to last a long time - Bibles - hence its name!