Spectrophotometer 4255 Scanning

This equipment stands out for its precise optics and design that ensure great stability and durability. Its accurately aligned detector and the superior quality of its deuterium and halogen lamps contribute to improve the accuracy of the equipment throughout the entire spectrum range. In addition, it has a solvent-resistant, watertight alphanumeric keypad, providing a robust and durable interface.

A highlight is the pre-aligned deuterium lamp, making it easy to change, and the ability to monitor both lamp usage and status, ensuring optimum performance over time. Built-in software includes sophisticated Windows® compatible utilities, allowing advanced manipulation of spectrophotometric data.

Versatility is enhanced by the ability to print A4 format graphs and tables of results, providing convenient and professional output of the data obtained. In addition, the spectrophotometer includes a time and date stamp printable on the results, adding a time dimension to the measurements. In summary, this spectrophotometer offers not only accuracy and optical performance, but also advanced functionality and durability to meet the demands of spectrophotometric analysis in a variety of laboratory environments.

FUNCTIONS INTEGRATED IN THE EQUIPMENT

Start screen: working modes
The integrated software allows full control of the instrument without the use of a PC for photometric, quantitative, scanning, kinetic, DNA/protein analysis and multi-wavelength analysis.

Quantitative analysis (standard curves)
Up to 10 standard solutions can be used to establish the equation of the concentration standard curve. You can also select up to 4 methods of standard curve fitting: linear, linear through 0, quadratic and cubic equation.

Multiple wavelength analysis
Allows up to 10 wavelength values to be entered for analysis of multiple components in a series of samples.

Wavelength sweep
The wavelength range for the sweep can be selected from 0.1, 0.2, 0.5, 1, 2 or 5 nm.
A High, Medium or Low sweep speed can be selected, varying from 100 to 3000 nm/minute.
Scanning starts from longer to shorter wavelengths, so the instrument remains on standby at high wavelengths, minimising degradation of UV-sensitive samples.
Precise control of the filter and lamp changes during the scanning process means that their effects are not visible in the final result.
Further manipulation of the scanning curve includes axis re-scaling, curve tracing and peak-picking.

Kinetics
For measurements over a time interval and calculation of reaction rates.
A real-time graph of Abs vs. Time is displayed on the screen.
Allows programming of a time delay up to a maximum of 12 hours and measurement time intervals of 0.5, 1, 2, 5, 10, 30 seconds and 1 min.
Subsequent manipulation of the graph allows re-scaling, curve tracing and selection of the part of the curve required for rate calculation.
The rate is calculated by using a linear algorithm before multiplying by the factor entered.