Pubn No: 30000H0K
6. VERIFICATION
1) It is recommended that flash point instruments are checked for operation on a regular basis. In
addition, the latest versions of IP, ASTM and ISO methods will make the yearly testing of
instruments using Certified Reference Materials (CRM) mandatory. More regular tests will utilise
Secondary Working Standards (SWS).
Note: Stanhope-Seta recommends using Setaflash Certified Flash Point Material, part number
Seta 99878-3.
2) Secondary Working Standards may be generated by the company carrying out the tests. The
procedure for making SWS is included in the standard method of test.
3) Validation requires that the measured flash point is within 0.7R of the certified value of the CRM,
where R is the reproducibility of the Test Method.
4) The following table gives guidance on materials and their flash points in closed cup testers:
Substance Approximate Flash Point °C
n-Octane 15
o-xylene 32
n-Nonane 31
n-Decane 46
n-Undecane 66
n-Dodecane 71
n-Hexadecane 135
Note: The certified flash point supplied with a CRM will be method-specific. Different test
methods will have a different certified flash point for a similar fluid.
Issue K
10 Jun 2007
28
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