If you are replacing an Omnipure cartridge, the model number matters. Two filters can look very similar while having different specifications, so the safest starting point is always the exact code printed on your existing cartridge or listed by your equipment manufacturer.
Omnipure Q5420
The Omnipure Q5420 stocked by ODDSTOCKS is a genuine carbon block replacement cartridge for compatible filtration systems. If your current filter is marked Q5420, compare the model carefully before ordering.
Omnipure Q5421 10M
The Omnipure Q5421 10M is also a carbon block cartridge and is marked as a 10 micron filter. Our current product information lists chlorine, taste and odour reduction, a maximum flow of 0.50 GPM and a maximum pressure of 125 PSI.
Which one should you buy?
Do not choose purely on appearance. Check the exact model number on your existing cartridge, then check your filtration system documentation. If the system specifies Q5420, order Q5420; if it specifies Q5421 10M, order that exact model.
Buying several filters?
ODDSTOCKS holds selected Omnipure stock in the UK. Browse our Filters & Plumbing collection for current availability. Businesses, maintenance teams and repeat buyers can also contact us through Bulk Buy & Trade for quantity enquiries.
Important: This guide is intended to help identify products. Always follow your equipment manufacturer's compatibility and installation guidance.