C# .NET - Is there any way to fix memory leak in WPF ToolKit Data Visualization line chart ?

I am using WPF Tool Kit  DataVisualization Chart , It has more memory leak in Line series chart.  Its increasing memory when each datapoint plot.  Could you please help me to fix this memory leak.

I've used this chart and did not notice any memory leaks.  Are you sure you are disposing all objects that implement the IDisposable interface?

I have verified in Data Visualization tool Kit Source code there is no dispose functions are implemented in that..I am looking for line Chart control in .NET 3.5 framework to plot real time data.