Hilli; I have not received your message, sorry. English is fine with me.
The suppliers name is KPTnaturfag, but you have to order via a company. The name they use here is natriumtetraborat. Important !
It may take a week or two with this supplier.
Better option maybe is the pharmacy; they will have it within one day;they order it for you; and I think you can order smaller amounts.