NP40 substitutes any good?

jep sontag jpark100 at
Tue Mar 6 21:31:51 EST 2001

NP-40 is no longer produced by Shell.  But NP 40 substitutes  (e.g., Igepal
CA 630) are available from many vendors (e.g. Sigma).   I am wondering
whether these substitutes perform the same as the real NP40.   Does anybody
have any opinion on NP substitutes?   Regards,   jep

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