I started new job
![Clap :clap3:](./images/smilies/clap2.gif)
![Red Card :redcard:](./images/smilies/redcard.gif)
![Red Card :redcard:](./images/smilies/redcard.gif)
Copper Sulfate D.G 9 no according to ChemWatch it is 6.1
Chromic Sulfate MSDS D.G 9 , CSIS no D.G, according to ChemWatch it is 8
Sodium Sulfide some MSDS says D.G 8,CSIS book no D.G, according to ChemWatch it is 4.2
And this is only beginning
Who do you follow, CSIS, ChemWatch,MSDS or ??????