A masterbatch for mixing with a raw polymer material during plastics manufacturing, the masterbatch comprising a thermoplastic polymer material (especially polyamide nylon PA 6) and an antimicrobial agent (especially silver ions), wherein the antimicrobial agent is dispersed within the thermoplastic polymer material, wherein the antimicrobial agent is present at a level of 20% to 30% by weight of the thermoplastic polymer material. An antimicrobial plastics product, especially a door handle, obtainable by moulding a mixture comprising the masterbatch and a raw polymer material, wherein the masterbatch is present at a level of 1% to 5% by weight of the mixture. The antimicrobial plastics product is effective against surface contact with human noroviruses.
