Extra charters appear in note field

Extra charters appear in note field

I'm using a note field to display a list of parts ordered. When the from loads for the first time and no parts are in the Form to display it is good.
Once a part is added to the Temp_Order Form I get this.

_________________ Parts Currently Ordered _________________
null12v 12amp hr Battery 100088470 1
/>




"null" appears at the beginning of the line and a close tag "/>" appears at the end.
I've cleared the input.Pending_Order_Note = ""; before anything is written to it and removed the ending tag "<br>/>" from the input statement.

Any thoughts on how to clean this up?