BIOTRON LIMITED — Director's Dealing 2011

Nov 20, 2011

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Level 2, 66 Hunter Street Sydney NSW 2000 Tel: (61-2) 9300 3344 Fax: (61-2) 9221 6333 E-mail: pnightingale@biotron.com.au Website: www.biotron.com.au

21 November 2011

The Manager Companies ASX Limited 20 Bridge Street Sydney NSW 2000

(3 pages by email)

Dear Madam

RE: DIRECTORS' INTERESTS

In accordance with Listing Rule 3.19A, I attach an Appendix 3Z, Final Director's Interest Notice, for Michael S. Hirshorn.

Yours sincerely

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Peter J. Nightingale Company Secretary

pjn6364

Appendix 3Z Final Director’s Interest Notice

Rule 3.19A.3

Appendix 3Z

Final 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.

Introduced 30/9/2001.

Name of entity BIOTRON LIMITED ABN 60 086 399 144

We (the entity) give ASX the following information under listing rule 3.19A.3 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of director	Michael S. Hirshorn
Date of last notice	19 May 2005
Date that director ceased to be director	18 November 2011

Part 1 – Director’s relevant interests in securities of which the director is the registered holder

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.

Number & class of securities

Nil

• See chapter 19 for defined terms.

Appendix 3Z Page 1

11/3/2002

Appendix 3Z Final Director’s Interest Notice

Part 2 – Director’s relevant interests in securities of which the director is not the registered holder

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.

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

	Name of holder & nature of interest Note: Provide details of the circumstances giving rise to the relevant interest Algirdo Pty Limited Superannuation Fund>	Number & class of securities 130,000 fully paid ordinary shares

Part 3 – Director’s interests in contracts

Detail of contract	Nil
Nature of interest	N/A
Name of registered holder (if issued securities)	N/A
No. and class of securities to which interest relates	N/A

• See chapter 19 for defined terms.

Appendix 3Z Page 2

11/3/2002