The Free State health department is recalling over a million condoms delivered for the ANC's centenary celebrations, over concerns they may be sub-standard.

According to the Treatment Action Campaign (TAC), South Africa's leading HIV group, the department of health ordered 8,700 boxes of condoms.

TAC warned that large numbers of "faulty" condoms were still in circulation in the Bloemfontein area.

The problem with the condoms was discovered after people complained to TAC.

Health authorities say they are still investigating claims that the condoms are porous.

A batch of 8,700 boxes - which all bore the South African Bureau of Standards stamp - were delivered to guesthouses, hotels, restaurants and bars before the ANC celebrations.

Image: Getty