Quantitative analysis is based on the Beer-Lambert’s law—the relationship between degree of absorption and the concentration of the absorbing material. Both protein and DNA absorb UV light, but they have different absorbance curves.
A quick method for assessing purity is by measuring the absorbances at 260 nm (A260) and 280 nm (A280) and the ratio of A260 to A280. The high signal/noise ratio and instant on/off capabilities of the UV LEDs enable quick measurements in micro volumes as small as 1 μl.
Crystal IS UVC LEDs used in these instruments increases efficiency, decreases costs and improves the quality of measurements.
High spectral quality of Crystal IS LEDs provides measurement linearity over a wide concentration range
Small footprint enables compact product design to maximize lab real estate
Instant on/off leads to greater number of sample measurements to increase productivity
Single peak and simple drive electronics allow for less costly, application-specific instruments