This is a compatible Neopost IS-330 Mailmark ink cartridge and IS-350 Mailmark ink cartridge. It uses Royal Mail Approved Mailmark blue franking ink and it comes directly from Meter Envelopes. Perfectly designed for the Neopost IS-330 and IS-350 Mailmark franking machine models.
Meter-Envelopes are one of only two companies in the UK that have their own unique brand of franking machine ink, approved by the Royal Mail. The franking ink used in this Neopost IS-330 and IS-350 Mailmark ink cartridge is fully compatible with all Neopost IS-330 and IS-350 Mailmark franking machines. It is guaranteed to last the same amount of impressions and the same life span as an original Mailmark cartridge brought directly from Neopost.