Molecular Devices' SpectraMax® 190 Microplate Reader is ideal for UV-Vis applications in the life sciences, particularly DNA analysis. The multi-channel design actually simulates a dual-beam spectrophotometer. Each sample has a separate sample and reference beam, so each well is measured directly, eliminating errors that could arise from variations in light output between the optical fibers. The system consists of eight sample beams and detectors and eight reference beams and detectors to provide both superior precision and speed of reading across the microplate up to an optical density (OD) value of 4.0. Optional accessories for verifying the performance of the SpectraMax 190 reader include the SpectraTest® ABS1 Absorption Plate and the IQ/OQ/PQ Manual. Regulatory compliance software tools, such as FDA 21 CFR Part 11, are available through SoftMax® Pro GxP software. Specifications:. Performance specifications Wavelength range: 190 – 850 nm. Wavelength selection: Monochromator, adjustable in 1.0 nm increments. Wavelength bandwidth: 2 nm. Wavelength accuracy: < ± 2.0 nm. Wavelength repeatability: ± 0.2 nm. Photometric range: 0.0 to 4.0 OD. Photometric resolution: 0.001 OD. Photometric accuracy: < ± 0.006 OD ± 1.0%, 0.0 - 2.0 OD. Photometric precision: < ± 0.003 OD ± 1.0%, 0.0 - 2.0 OD. Scattered light: < 0.05% at 230 nm. Light source: Xenon flash lamp. End point: 12 seconds. Kinetic: Minimum interval of 9 seconds. Temperature range: Ambient temperature + 4°C to 45°C. Temperature uniformity: ± 0.5 °C at 37 °C Labprocure is responsible for this device.