Standards for pesticides in LCMS

[pincer]

I will analyze the pesticides residue in water (waste water and drinking water) and produce by LCMS/MS. I have a 120-compund list, most of them are trianzine, herbcides, carbamtes, phenyl urea and fungicides. Where can I get standards for these target compounds? I search accustandards and Absolute standard, they have some. Where else can I search for standards? Thanks!

[Pepter]

http://www.analytical-standards.com
http://www.sigmaaldrich.com

[bisnettrj2]

o2si http://www.o2si.com/
Ultra http://www.ultrasci.com/globalhome.aspx
Chemservice http://web1.chemservice.com/csiwebsite. ... x?openpage
Crescent Chemical http://www.creschem.com/
Cerilliant http://www.cerilliant.com/

[pincer]

Thanks a lot!