I need the best HPLC instrument to use in environmental/food/toxicological analysis, which brand and model is the best for analytical applications?

01 January 1970 2 2K Report

List of HPLC/UHPLC brands:

http://www.agilent.com/en/products/liquid-chromatography/infinitylab-analytical-lc-solutions

http://www.waters.com/waters/en_GB/Discovery-evelopment/nav.htm?cid=134776113&locale=en_GB

http://www.ssi.shimadzu.com/products/productgroup.cfm?subcatlink=liquidchrom

http://www.perkinelmer.co.uk/category/liquid-chromatography-hplc-uplc-instruments

http://www.knauer.net/en/systems-solutions/analytical-hplc-uhplc.html

https://jascoinc.com/products/chromatography/

http://www.hitachi-hightech.com/us/product_list/?ld=sms1&md=sms1-2

http://www.gilson.com/en/AI/Products/52.69/Default.aspx#.WXUWMPl95dg

https://bucksci.com/collections/binary-and-quaternary-hplc-systems

http://www.cecilinstruments.com/adept-1.html

http://www.bio-rad.com/en-us/category/chromatography-systems-components-accessories?pcp_loc=lnav