CE Consumables 

PVA coated capillaries contain a permanently adsorbed layer of poly(vinyl alcohol). This coating minimizes hydrophobic and electrostatic solute/wall interactions and eliminates electroosmotic flow (EOF). Using a proprietary deposition process, the PVA coating is stable over a wide pH range even under basic conditions from 2.5 to 9.5. This stability allows use of a wide range of common CE buffers. Because the silica surface is covered, many proteins and amines can be analyzed without the peak tailing found with uncoated capillaries. In addition, since EOF is eliminated, cumbersome washing procedures are unnecessary and migration time reproducibility can be improved.