§ Mr. BurstowTo ask the Secretary of State for Defence what were the liquid compounds of the COMBOPENS Autoject Nerve Agent Antidote L4AI produced by Duphar International Research BV of the Netherlands and supplied to the British Army in the Gulf War. [40143]
§ Dr. ReidThe COMBOPEN Autoject Nerve Agent Antidote L4A 1 was available for use by UK forces during the Gulf conflict as a post-attack therapy against nerve agents. The composition of the liquid formulation which it contained was:
Composition Pralidoxime Methane Sulphonate (P2S) 500mg Avisafone 10mg Atropine Sulphate (USP) 2mg Citric Acid Monohydrate 42mg Water (for injection) 2m1 Sulphuric Acid (BP) and Sodium Hydroxide (BP) were added as required during manufacture to adjust the solution's hydrogen ion concentration (its pH level) to within the range of pH 3.0–3.4 in order to maintain the stability of the solution.