This is the 9" version of the OMB-934-1mPB (10")
It is marked on the cartridge OMB9ML but it's correct part number should be OMB-834-1mPB.
This cartridge is 0.4 nominal (1 micron absolute) as Omnipure uses the aboslute rating but most other cartridge makers use the nominal rating.
Omnipure Coconut / lead (OMB-834-1MPB) is made from Coconut Shell Carbon, which creates a better tasting water and is also rated for lead reduction for 9,800 litres. Because of the unique pore structure of this carbon, it is well suited for chemical adsorption, including VOCs, while treating chlorine and chemicals that contribute to taste, colour and odour.
Rated for Cryptosporidium and Giardia will treat up to 24,500 litres