Tender For to purchase essential chemicals for water and food testing samples - diethyl ether for analysis emparta, petroleum benzine boiling range 40-60c, acetonitrile for chromatography 2.5 l, methanol for chromatography 2.5 l, methanol for for analysis emparta, silver nitrate for analysis emparta acs, potassium iodide for analysis emparta, 2-propanol hple grade 2,5l, chaloform for analysis emparta, benzene for analysis emparta acs, xylene low in sulfur 500m, hydrochloric acid about 37% for analysis