Polyethylene composition for high pressure resistant pipes with improved homogeneity

A polyethylene composition comprising:

• a base resin, which is a polymeric part of the polyethylene composition without fillers, having a density of from 953.0 kg/m3 to 960.0 kg/m3, determined according to ISO 1183, wherein
• the polyethylene composition has a melt flow rate MFR21 (190° C., 21.16 kg), of from 1.0 to 7.5 g/10 min, determined according to ISO 1133, a complex viscosity at a frequency of 0.05 rad/s eta0.05 of from 750 kPa·s to 1900 kPa's, determined according to ISO 6721-1 and ISO 6721-10, a white spot rating of 3.0 to 12.0, determined according to ISO 18553, after a single compounding step in a twin screw extruder at an extruder temperature before die plate of 200° C. to 300° C. and a specific energy input SEI of 200 kwh/ton to 350 kWh/ton, a weight average molecular weight Mw of 300 kg/mol to 600 kg/mol, determined by GPC, a molecular weight distribution Mw/Mn of from 30 to 65, and a tensile modulus of 1200 MPa to 2000 MPa, determined according to ISO 527-2:1993.