Neopost IS-420 / IS-440 Compatible Blue Ink Cartridge


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This compatible smart blue Neopost IS-420 / IS-440 ink cartridge is bought to you by Meter-Envelopes. This is a Royal Mail Approved replacement compatible for the Neopost IS-420 / IS-440 franking machine.

Meter Envelopes will guarantee this ink cartridge will give the same quality, life or quantity of prints as the original equipment manufacturers cartridge. None of our compatible Neopost franking machine ink cartridges and labels are manufactured, affiliated or endorsed by the original equipment manufacturer Neopost. Part and model Numbers are used for descriptive and reference purposes only.

SKU: MCI-310050-CB-IS420-ME

Additional information

Royal Mail Approved


Suited For Models

Neopost IS-420 / IS-440

Cartridge Type


Ink Colour

Smart Blue

Cartridge Life

Around 9,290 prints

Neopost Replacement Part Number / Product Code(s)

NEO310050 & 310050. Previous product code: NEO300621 & 300621

Neopost Price

£124.99 + VAT & Delivery


This is a compatible Neopost IS-420 ink cartridge and IS-440 ink cartridge. It uses Royal Mail Approved smart blue franking ink and it comes directly from Meter Envelopes. Perfectly designed for the Neopost IS-420 and IS-440 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-420 and IS-440 ink cartridge is fully compatible with all Neopost IS-420 and IS-440 franking machines. It is guaranteed to last the same amount of impressions and the same life span as an original cartridge brought directly from Neopost.


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