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5.6 Appendix 1 : Methodology 
5.6.1 Employed PCA reference standards 
PCA reference mixtures could only be purchased from Ehrenstorfer (Augsburg, 
Germany). Further references were supplied from the state laboratory of Basel-Stadt, 
from a manufacturer (Caffaro, Italien) and from LCG (Teddington, UK). Table 40 
summarises the available reference mixtures and their composition. 
Table 40: Composition and source of the sPCA and mPCA reference mixtures employed for 
quantification or for composition characterisation. 
Name 
Company 
Chain length 
Chlorine content 
sPCA mixtures 
Hordalub 17 
Hoechst 
p 
o 
1 
p 
49 % 
Hordalub 80 
Hoechst 
p 
o 
1 
p 
56 % 
Hordalub 500 
Hoechst 
p 
o 
1 
p 
62 % 
Cereclor 60 L 
ICI 
p 
o 
1 
p 
59 % 
Cereclor 70 L 
ICI 
p 
o 
1 
p 
69 % 
Standard solutions 
Chloroparaffin 
Ehrenstorfer 
p 
o 
1 
p 
51.5 % 
Chloroparaffin 
Ehrenstorfer 
p 
o 
1 
p 
63 % 
Chloroparaffin 
Ehrenstorfer 
p 
o 
1 
p 
55.5 % 
mPCA mixtures 
Cloparin 50 
Caffaro 
u 
1 
u 
51 % 
Cloparin 51 PL 
Caffaro 
? 
51 % 
Cloparol 49 ST 
Caffaro 
? 
49 % 
Chlorparaffin 40 fl. 
Hoechst 
u 
1 
u 
41 % 
Chlorparaffin 45 fl. 
Hoechst 
u 
1 
u 
45 % 
Hordalub 80 EM 
Hoechst 
u 
1 
u 
49 % 
Hordaflex SP 
Hoechst 
u 
1 
u 
56 %