Double Beam Microprocessor UV-VIS Spectrophotometer 2802 Peliter Model



 Double Beam Microprocessor UV-VIS

 Spectrophotometer 2802 Exclusive Model 

(Eight Cell Holder With Peltier Temperature

Controller and Sipper System)

(Original / premium with Japanese Technology)


DOUBLE BEAM UV-VIS Spectrophotometer with more accuracy and flexible requirements. The two detectors are used measure sample and reference respectively and simultaneously for optimizing measurement accuracy. It has wide wavelength range satisfying requirement of various fields, such as biochemical research and industry, pharmaceuticals analysis and production, education, environment, protection, food industry etc.

Technical Specifications:

  ?   Optical System                                       Double Beam (1200 Lines/ nm Grating)

  • ?   Wavelength Range                                190-1100nm

    ?   Mode                                                      Basic/Quantitative/Wavelength Scan/DNA

                                                                      Protein Test/Kinetics/Multiwavelength

    ?   Scanning Speed                                    Fast/Medium/Low

    ?   Band Width                                            1 nm.             

    ?   Wavelength Accuracy                           ±0.3nm

    ?   Wavelength Repeatability                      0.2nm

    ?   Photometric  Accuracy                           ± 0.3 % T

    ?   Photometric Repeatability                      0.2 % T

    ?   Photometric Display Range                   0-200% t, -0.3 -3.0A, 0 – 9999 C

    ?   Stability                                                   0.001 A/h @500 nm

    ?   Baseline Flatness                                  ± 0.001A 

    ?   Noise                                                      ± 0.001A

    ?   Stray Light                                             < 0.05%@220nm&360nm

    ?   Data Output Port                                    USB

    ?   Printer Port                                             Parallel Port

    ?   Display                                                   Graphic LCD (  320×240 Dots )

    ?   Lamps                                                    Deuterium Lamp & Tungsten Halogen Lamp

    ?   Detector                                                  Silicon Photo diode

    ?   Packing Dimension:                               860×660×465 mm (LxWxH)

    ?   Weight                                                    26 kg


Technical specification of peltier/sipper system

1. The valid temperature range is from 15º to 65º

2. The valid sampling time range is from 30s to 10min,

3. The valid peristaltic pump speed range is from 1 to 12

4. The sampling speed is about 50ml/min.

5. Power supply is 220±22V@50±1Hz or 110±11V@60±1Hz.



1) Control Unit.

2) Cell holder with Peltier System. (It’s already pre-loaded into the compartment of the spectrophotometer).

3) Control Cable (to connect the Control Unit with the Cell holder with Peltier System).

4) Peristaltic pump pipe. (It’s already pre-loaded into the pump valve of the Control Unit)

5) Power cord.

Salient Features 

?   Wide Wavelength range, satisfying requirements various fields.

?   Fully automated design, realizing the simplest measurement & satisfying the requirement of pharmacopeia

?   Maximum of 9 Wavelength & 8 Sample can be measured at one time

?   Automatic change –over Between W lamp & D2 lamp

?   Optimized optics and large scale integrated circuits design, light source and receiver

?   From world famous measurement methods all add up to high performance and reliability

 ?   Rich measurement methods: wavelength scan, time scan, multi wavelength

? Determination, multi –order derivative determination, double-wavelength method and triple- wavelength methods etc, meet difference measurement requirement

?   Automatic 10 mm 8 –cell holder

?   Data Output can be obtained via a printer port and a USB interface

?   Parameters and data can be saved for user’s convenience.

 ?  Pc controller measurement can be achieved for more accurate and flexible requirement



Glass Cell                    :          4 nos.

Quartz cells                 :          2 nos.

Instruments Cover      :          1 no.

Software CD               :          1 no.

USB Cable                  :          1 no.

Operational Manual    :          1no.

Software Manual        :          1 no.

Software key              :          1no.



* Medicine/Pharmaceutical Industry

* Environment Monitoring

* Commodity Inspection

* Food Inspection

* Agricultural Chemistry

* Teaching in Colleges & Universities

* Metallurgy

* Geology

* Machine Manufacturing

* Petrochemical Industries

* Water and Waste water Labs

* Food and beverages Labs


Basic Mode

To measure the Absorbance and transmittance



1.    Coefficient Method

2.    Standard Curve Up to 10 Standard sample may be used to establish a

curve.  Four methods for fitting a curve through the calibration points :

Linear fit. Linear fit through zero, Square fit and cubic fit.


DNA/Protein Test

Concentration and DNA purity are quickly and easily calculated: Absorbance

rations 260 nm / 280 nm with optional subtracted absorbance at 320 nm. DNA

concentration = 62.9XA260-36.0XA280 Protein concentration = 1552xA260-

757.3xA 280


Wavelength Scan

1.    The wavelength scan intervals are 0.1,0.2,0.5,1,2,5 nm

2.    Hi, Medium and low scan speed are available. They vary from 100 to

3600 nm/min

3.    Wavelength are scanned from high to low so that the instrument waits

at high WL. And it minimizes the degradation of UV sensitive samples.




This mode may be used for time course scanning or reaction rate calculations.

Abs v/s time graphs is displayed on the screen in real time, Wait time and measurement time up to 12 hours may be entered with time interval of 0.5,1,2,5,10,30 seconds and one min. Post-run manipulation includes re-scaling, curve tracking and selection of the part of the curve required for rate calculation. Rate is calculated using a linear regression algorithm before multiplying be the entered factor.