278 Resultat för: "EU00017MERC"

Supplier: Merck

Spectromelt is based on lithium borates for fluxing digestion as granulate or as fused material used for X-ray fluorescence analysis (XRF).
The fused particles are spherical, have a small particle size distribution and a higher bulk density.
The material is easy to handle and has a low loss on ignition.

Supplier: Merck

Saltsyra 0,1 mol/l (0,1 N), Titripur® Reag. USP, Reag. Ph. Eur. volumetrisk lösning, Supelco®

Supplier: Merck

Natriumhydroxid 1 mol/l (1 N) i vattenlösning, Titripur® Reag. USP, Reag. Ph. Eur. volumetrisk lösning, Supelco®

Supplier: Merck

Mer information om specifikation och varningar finns på www.vwr.com och i VWR Chemicals-katalogerna

Supplier: Merck

Ammoniumcerium (IV) nitrat 0.1 mol/l (0.1 N) i vattenlösning, Titripur® Reag. Ph Eur volumetrisk lösning, Supelco®

Supplier: Merck

Natriumtiosulfat 0,1 mol/l (0,1 N) i vattenlösning, Titripur® Reag. USP, Reag. Ph. Eur. volumetrisk lösning, Supelco®

Supplier: Merck

Silvernitrat 0,1 mol/l (0,1 N) i vattenlösning, Titripur® Reag. USP, Reag. Ph. Eur. volumetrisk lösning, Supelco®

Supplier: Merck

In general, ion exchangers consist of a cross-linked polymer matrix with a uniform distribution of fixed ionic groups sited throughout the resin structure. These must be balanced by a similar number of ions of the opposite charge, (counter ions) to maintain electrical neutrality. Cation exchangers therefore, exchange and enrich only cations, anion exchangers only anions. In contrast adsorber resins have a non ionic, but depending on the structure, a somewhat polar character, and don't adsorb stoichiometrically both: anions, cations, as well as uncharged compounds.