（The manufacturer amended their MSDS. Which MSDS should we use?）
Comparing the MSDS that we acquired at time of purchase, and the very recent MSDS received from the same manufacturer, we find the contents have changed. When shipping the originally purchased articles which MSDS should we use? (31 May 14)
I am assuming the manufacturer must have changed their product and made a new MSDS. If you are shipping the original product purchased before, you should use the original MSDS which you received at time of the original purchase.