Containing a full 250ml of cleaning solution that is 99.7% pure Isopropanol. This pump spray leaves no residue and is ideal for cleaning printers or other office equipment.This handy bottle of Isoclene cleaning spray can also be used for more technical jobs like cleaning magnetic read/write heads or even edge connectors when reseating PC boards. There is a reason that so many ICT technicians use this spray and we recommend any home or small office should have one to hand too.Manufactured to BS EN ISO 9001:2000 certification at our own production sites.