Products Catalog

Specification

The DU Series 700 spectrophotometers are advanced and affordable systems that generate accurate
and reproducible measurements. The narrow bandwidth allows you to scan your samples with
excellent resolution. With its focused-beam design, the system provides optimal and reproducible
results for small samples, capabilities usually found only on more expensive systems. The systems
have a unique touch-screen user interface with easy-to-use but powerful software. A wide range
of applications software is included and makes the DU Series 700 the perfect solution for life
science, research and analytical labs.

product features :

Generic Standard Features

* CSV File Format for Data Transfer
* USB Ports
* Spectral Bandwidth of 3.0 nm
* Touch-Screen User Interface
* Operator and Sample ID's
* Wavelength Range from 190 to 1100 nm
* Focused Beam Design
* Quick Interchange of Cell Holders & Modules
* Password Protection with Security List
* Automatic Lamp Turn-Off

Microsamples and Focused Beam

* The narrow beam width of the system ensures excellent results for small samples in semi-microcells. With the focused beam, there is no need for masking, and the entire energy is utilized to provide a wide dynamic range and excellent linearity. With this design, small variances in cell positioning have no effect on the reproducibility of your results.
* For even smaller samples, the popular 50 µL microcells from Beckman Coulter can be used with a specifically designed cell holder. The cells are easy to clean and, if not diluted, your precious DNA, RNA, or oligonucleotide samples can be quickly recovered.

Features

Advanced Features

* Startup diagnostics and a range of system checks to guarantee that the instrument performs to specifications each day
* Both the UV and Visible lamps can be turned off automatically and independently to protect lamp life and save cost
* USB ports for printer, memory device, and keyboard. Data can be transferred to a PC quickly and easily in CSV format (comma-separated values). The CSV format has become the standard import format for spreadsheets and LIMS
* Temperature control for single samples with the optional Peltier temperature control module, ideal for enzyme samples
* Built-in transport mechanism for 7-position carousel
* Password protection with individual access control (security list)
* With the DNA/Protein Tools (DU 730 only), calculations, common conversions, and lookup tables are at your fingertips

Operational Simplicity

* Intuitive and convenient touch-screen user interface makes operation a breeze
* Operator and Sample ID's with alphanumeric input for quick and convenient sample identification
* Multilanguage Software

More Info
Each system comes with a Single Cell Holder and includes a complete set of application programs to address your application needs.

DU 720 General Purpose:

*
Fixed Wavelength
*
Wavelength Scan
*
Kinetics/Time
*
Single Component Analysis (SCA)

DU 730 Life Science:
All DU 720 Modes, plus:

*
Protein Assay Analysis
*
Nucleic Acid Analysis
*
Dye Incorporation (%)
*
DNA/Protein Tools

Application Software for DU 720 & DU 730:

Takes measurements from up to 4 wavelengths automatically in absorbance or transmittance.

* Results can be obtained with a formula or a simple factor

Wavelength Scan
Takes an absorbance or transmittance scan at a specified wavelength range and resolution.

* Trace and Zoom functions
* Overlay with stored scans
* Peak and valley determination

Kinetics/Time

Measures samples in absorbance at specified time intervals and determines the slope or rate.

* Simultaneous measurement of up to 7 rate reactions
* Calculation of rate and variance
* Background correction with 2nd wavelength

Single Component Analysis

Determines the concentration of unknown samples via a standard curve.

* Accepts up to 24 standards
* Determination of standard curve or input of known coefficients
* Rerun of individual standards
* Linear or non-linear (quadratic) curve fit
* Replicates with average, %CV calculation and outlier indication
* Background correction with 2nd wavelength

Application Software for DU 730:

Protein Assay Analysis

Determines protein concentrations with the most commonly used assay methods:

* Bradford
* Lowry (high and low)
* Biuret
* UV 280
* Colloidal Gold
* Bicinchoninate (BCA)

Features are similar to the Single Component Analysis application

Nucleic Acid Analysis

Determines sample purity, concentrations, and other parameters from DNA, RNA, and oligonucleotide samples.

* 260/280 Ratio
* Single Ratio (with or w/o Background Correction)
* Double Ratio & Concentration (with or w/o Background Correction)
* Concentration for dsDNA, ssDNA, and RNA with pathlength correction
* Oligonucleotide Quantitation for long and short oligos with nearest-neighbor algorithm, including determination of theoretical thermal melting point for DNA samples

Dye Incorporation (%)

Analyzes labeling reaction for spotted array sample preparation.

* Single or dual-color methods
* Suitable for any dye that has fluorescence wavelengths similar to Cy3 (550 nm) or Cy5 (650 nm)

DNA/Protein Tools

Provides many functions to aid you in your daily laboratory tasks.

* Calculations
* Common Conversions
* Common Tables from the Microbiology Handbook

for more information please visit : (http://www.beckmancoulter.com/products/instrument/analytical/uvvis/duseries 700_inst_dcr.asp)