MSC Circ 1312 Foam Concentrates Quiz Set C

Source: MSC.1/Circular.1312 – Revised Guidelines for the Performance and Testing Criteria, and Surveys of Foam Concentrates for Fixed Fire-Extinguishing Systems (10 June 2009), Annex.
Reference: imorules.com – MSC.1/Circ.1312

6. Why is the polyethylene tube inserted into the measuring cylinder before freezing?

A) To allow the sample to be stirred during the conditioning period B) To measure the freezing point of the sample directly C) To collect any sediment that separates during freezing D) To prevent the glass measuring cylinder from breaking due to expansion of the foam concentrate on freezing

MSC.1/Circ.1312 – Foam Concentrates for Fixed Fire-Extinguishing Systems – Set C