A POLYURETHANE FOAM COMPONENT PART OF A CT SCANNER . IT IS USED FOR X-RAY CT IMAGE CALIBRATION FOR PATIENTS PRIOR TO RADIOTHERAPY TREATMENT. THE MAIN FEATURE IS THAT IT IS MADE FROM MOULDED MATERIAL WITH A CONSISTENT DENSITY THROUGHOUT. IT HAS LINES ON IT WHICH ALLOW IT TO BE ACCURATELY LINED UP ON THE THE CT SCANNER DURING USE AND IT ALLOWS THE SCANNER TO BE CHECKED TO SEE IF IT MEETS AN AGREED SPECIFICATION.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR) GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 9031 FOR MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER; PROFILE PROJECTORS GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 903180 FOR OTHER INSTRUMENTS, APPLIANCES AND MACHINES CN CODE 90318020 - OTHER THAN ELECTRONIC, FOR MEASURING OR CHECKING GEOMETRICAL QUANTITIES ALSO CLASSIFIED IN ACCORDANCE WITH THE FOLLOWING:- SECTION XVIII NOTE 2(A) TO CHAPTER 90 HARMONISED SYSTEM EXPLANATORY NOTE (HSEN) 14 TO HEADING 90.31 COMBINED NOMENCLATURE EXPLANATORY NOTES (CNEN) TO COMMODITY CODES 9031 8032 AND 9031 8034 AND 9031 8091