Related Rule
Finland
Practice Relating to Rule 73. Biological Weapons
Finland’s Criminal Code (1889), as amended in 2008, provides that any person who “uses … biological or other prohibited weapons or ordnance” shall be “sentenced for a war crime to imprisonment for at least one year or for life”. 
Finland, Criminal Code, 1889, as amended in 2008, Chapter 11, Section 5(1)(14).
(emphasis in original)
The Criminal Code further states:
Section 9 - Breach of the prohibition of biological weapons
A person who
(1) uses a biological or a toxin weapon in a manner not referred to in sections 1 through 3 of this chapter,
(2) unlawfully prepares, transports or delivers a biological weapon or a toxin weapon, or
(3) in violation of an international convention on the development, production and storage of bacteriological (biological) and toxin weapons and on their destruction (Treaties of Finland 15/1975) develops, prepares, otherwise procures, stores or possesses a biological weapon or a toxin weapon or weapons, devices or equipment for the dissemination of a biological weapon or a toxin weapon,
shall be sentenced, unless the same or a more severe penalty for the act has been provided elsewhere in the law, for a breach of the prohibition of biological weapons to imprisonment for at least four months and at most six years. 
Finland, Criminal Code, 1889, as amended in 2008, Chapter 11, Section 9.
[emphasis in original]
At the CDDH, Finland stated that it “attached the greatest importance … to the prohibition of … bacteriological warfare in the Geneva [Gas] Protocol of 1925”. 
Finland, Statement at the CDDH, Official Records, Vol. VI, CDDH/SR.44, 30 May 1977, p. 285, § 34.
In the preliminary stages of the First Review Conference of States Parties to the Biological Weapons Convention in 1980, Finland stated:
With regard to the compliance by the Government of Finland to articles I–V and X, I wish to communicate the following information: (1) the obligations set out in articles I–III have been complied with; (2) the legislation of Finland is in harmony with the obligations set out in article IV. 
Finland, Response to the request by the Preparatory Committee for the First Review Conference of States Parties to the Biological Weapons Convention, Geneva, 3–21 March 1980, excerpted in UN Doc. BWC/CONF.I/4, 20 February 1980, § 37.