diff --git a/kalibrierschein/siunitx-PTB.sty b/kalibrierschein/siunitx-PTB.sty
index 64a894f6a92ab3a978e3d8b5ed4088aba33ae968..1d4d86e8afc4c3817c2b033ea63d3513b3dc6484 100644
--- a/kalibrierschein/siunitx-PTB.sty
+++ b/kalibrierschein/siunitx-PTB.sty
@@ -1,6 +1,6 @@
 % Rolf Niepraschk, PTB, Rolf.Niepraschk@ptb.de
 
-\ProvidesPackage{siunitx-PTB}[2017/12/01 v0.1b Additions to `siunitx'' (PTB/RN)]
+\ProvidesPackage{siunitx-PTB}[2018/05/28 v0.1c Additions to `siunitx'' (PTB/RN)]
 
 \RequirePackage{amsmath,siunitx}
 
@@ -12,6 +12,7 @@
 
 \DeclareSIUnit\torr{Torr}
 \DeclareSIUnit\mbar{\milli bar}
+\DeclareSIUnit\sccm{sccm}% Standard Cubic Centimeters per Minute
 
 %%%\AtBeginDocument{%
 \sisetup{%