DIMERIX LIMITED — Director's Dealing 2008

Jan 31, 2008

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Name of entity	SUN BIOMEDICAL LIMITED
ABN	18 001 285 230

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	ANDREW JOHN PAICE
Date of last notice	21 AUGUST 2007

Part 1 – Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust.

Note: In the case of a company, interests which come within paragraph (i) of the definition of ‘notifiable interest of a director’ should be disclosed in this part.

Direct or indirect interest	DIRECT
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to therelevant interest.	N/A
Date of change	1 FEBRUARY 2008
No. of securities held prior to change	5,000,000 ORDINARY SHARES500,000UNQUOTEDOPTIONSEXPIRING12SEPTEMBER 2009 EXERCISABLE AT $0.10 EACH ATANY TIME AFTER 30 JUNE 2007
Class	ORDINARY SHARES
Number acquired	116,250
Number disposed	-
Value/ConsiderationNote: If consideration is non-cash, provide details and estimatedvaluation	$4,998.75
No. of securities held after change	5,116,250 ORDINARY SHARES500,000UNQUOTEDOPTIONSEXPIRING12SEPTEMBER 2009 EXERCISABLE AT $0.10 EACH ATANY TIME AFTER 30 JUNE 2007
Nature of changeExample: on-market trade, off-market trade, exercise of options,issueofsecuritiesunderdividendreinvestmentplan,	SHARE PURCHASE PLAN

• See chapter 19 for defined terms.

11/3/2002

Appendix 3Y Page 1

participation in buy-back

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of ‘notifiable interest of a director’ should be disclosed in this part.

Detail of contract Nature of interest Name of registered holder (if issued securities) Date of change No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed Interest acquired Interest disposed Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation Interest after change

340457_1.DOC

• See chapter 19 for defined terms.

11/3/2002

Appendix 3Y Page 2