Use the reagents specified in the manufacturer's instructions. Use only reagents of analytical grade.
5.4.4.3 Apparatus
Ordinary laboratory apparatus and the following.
5.4.4.3.1 Combustion device, depending on combustion technique (see 5.2.2 to 5.2.4).
5.4.4.3.2 Infrared absorption device (see Figure 6).
5.4.4.4 Setting up the test assembly
Set up and operate the test assembly in accordance with the manufacturer's instructions.
5.4.4.5 Check of test assembly, blank value determination