B

A colorimetric protein quantification method based on the binding of Coomassie Brilliant Blue G-250 dye to proteins, causing a shift in absorbance from 465 nm to 595 nm. Supported by NanoQ and MRX Series.

A self-diagnostic system that automatically checks key instrument components at startup, including CPU, memory, lamps, motors, and wavelength calibration. Helps prevent unexpected downtime and ensures consistent performance. Featured in Alpha, POP, and NanoQ.

A fundamental principle of spectrophotometry stating that absorbance is proportional to the concentration of the absorbing species and the path length: A = εlc, where ε is the molar absorptivity, l is path length, and c is concentration.

Bicinchoninic acid assay. A colorimetric method for total protein quantification based on the reduction of Cu²⁺ to Cu⁺ by protein in alkaline conditions. Supported by NanoQ and MRX Series.

The change in absorbance reading over time at a fixed wavelength when measuring a blank. Expressed as Abs/h. Alpha: <0.0003 Abs/h; POP: 0.001 Abs/h at 700 nm after one hour warm-up.

A measure of baseline variation across the full wavelength range when measuring a blank or air reference. Low baseline flatness indicates stable optical performance. Alpha maintains <0.0005 Abs rms across 190–1100 nm.

Also known as spectral bandwidth or slit width. The range of wavelengths passed by a monochromator at half the maximum intensity (FWHM). Narrower bandwidth provides higher spectral resolution. Alpha: 1.0 nm; POP: <1.8 nm; MRX: 2.9 nm.