Miniature flow-injection analysis manifold created by micromilling.

The miniature flow injection analysis (muFIA) system is based on a mechanically engraved manifold in a PMMA-substrate. The channels have a trapezoidal cross-section with a depth of 150 mum and a width between 180 and 360 mum and the reactor volume is 3.75 mul.

High-voltage contactless conductivity detection of underivatized amino acids in capillary electrophoresis.

High-voltage contactless conductivity detection of underivatized amino acids in both acidic and basic media is demonstrated. The suitability of different acidic buffer solutions at pH values of about 2.5 was investigated with 12 amino acids.