Model BNR 2800 is advanced DOUBLE BEAM UV-VIS Spectrophotometer with more accuracy and flexible requirements. The two detectors are used to measure sample and reference respectively and simultaneously for optimizing measurement accuracy. It has vide wavelength range safisfying requirement of various filed such as biochemical research and industry, pharmaceuticals analysis and production, education, environment protection, food industry etc.
2. Standard Curve
Up to 10 standard samples 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.
Concentration and DNA purity and easily calculated:
Absorbance ratios 260 nm / 280 nm with optional subtracted absorbance at 320 nm. DNA concentration=62.9xA260-36.0 x A2B0 Protein concentration=1552xA260-757xA280.
The wavelength scan intervals are 0.1, 0.2, 0.5, 1, 2, 5 nm
High, Medium and Low scan speeds are available. They vary from 100 to 3600 nm/min.
Wavelengths are scanned from high to low so that the instrument waits at high WL and it minimize the degradation of UV sensitive samples.
This mode may be used for time course scanning or reaction rate calculations. Abs vs time graphs is displayed on the screen in real time.
Wait time and measurement time up to 12 hours may be entered with time intervals of 0.5,1,2,5,10,30 seconds and 1 min. Post-run manipulation includes re-scaling, curve tracking and selection of the part of the curve required for the rate calculation. Rate is calculated using a linear regression algorithm before multiplying by the entered factor.
The perfectly designed double beam BNR-2900 UV/VIS SPECTROPHOTOMETER successfully realizes high accuracy and reliability measurement to meet various application requirements. It can be used extensively for qualitative and quantitative analysis in such fields as biochemical research and industry, pharmaceutical analysis and production, education, environmental protection, food industry, clinical examination, sanitation and antiepidemic etc.
Wide wavelength range, satisfying requirements of various fields
Fully automated design, realizing the simplest measurement & satisfying the requirements of pharmacopoeia.
Maximum of 9 wavelenths & 7 samples scan be measured at one time.
Automatic change-over between W lamp & D 2 lamp
Optimized optics and large scale integrated circuits design, light source and receiver from world famous measurement all add up to high performance and reliability
Rich measurement methods:wavelength scan, time scan, multi-wavelenth determination, multi-order derivative determination, double-wavelength method and triple-wavelength method etc., meet different measurement requirement.
Automatic 10mm 8-cell holder
Data output can be obtained via a printer port and a RS-232 interface
Parameters and data can be saved for user's convenience
PC controlled measurement can be achieved for more accurate and flexible requirement
Fast / Medium / Slow
-0.3 - 3.5 A, 0 to 220 %T
< 0.10 nm
+ 0.3% T (0-100% T) +0.002 A (0-0.1 A)
< 0.15 % T
< 0.1% T (Nal. 220nm, NaNO2 340 nm)
+ 0.002 A
< 0.001A/h (at 500 nm, after warming up)
+0.001A (at 500 nm, after warming up)
Dual Silicon Photodiode
6 inches high light blue LCD
AC:220V + 10%, 50 Hz.
630 x 470 x 210 mm
RS 232 Cable
MICROPROCESSOR UV-VIS SPECTROPHOTOMETER
UV-visible spectrophotometer, an analytical instrument commonly used in physico-chemical laboratories to make quantitaive and qualitative analysis of specimen materials in the ultraviolet, visible spectral range finds much scope for its service in such fields as medicine, clinical examination, biochemistry, petro-chemical industry. Bio technology, Environmental protection and quality control. The technique has enjoyed a molecular biology and the need to quantify DNA and proteins. Here, the simplicity of use, the non-destructive nature of the sampling and the cost effectiveness of the measurement has proved very beneficial in the modern laboratory.
% T:0 to 100%, Abs.:0 to 1.999
Conc.:0 to 1999, K-Factor:0 to 1999
+0.005 Abs at 1.0 Abs +0.010 Abs at 1.0 Abs
Less thn 0.1% Abs at 320 nm
+ 1 Count
Single Line LCD display
4 Keys, Soft touch membrane type
Printer interface for any printer
RS 232C interface
a) Tungsten Halogen Lamp
b) Deuterium Lamp (D2)
Wide range Silicon Photodiode
Complete mirror optics with resolution 1200 grooves/mm grating
4 position adjustable sample holder
230V + 10%, 50 Hz. AC
420 x 350 x 240 mm (lxbxh) Approx.
10 Kg (Approx.)
195 to 1000nm
+ 0.5 nm
+ 0.3 nm
DIGITAL CONDUCTIVITY METER
BNR16 Table Model
BNR17 Portable Model
3 1/2 Digit LED
3 1/2 Digit LCD
0 - 1000 Mohs/cm
2 & 20 Mohs/cm
Cell Constrant Adjustment
230v + 10%
1 x 9V Battery
76 x 275 x 175 mm
85 x 28 x 165 mm
2 kg. (Approx.)
0.8 kg. (Approx.)
Conductivity Cell,Operation Manual, Dust Cover
Photo Colorimeters, Spectrophotometers, Digital pH Meters, Conductivity/TDS Meters, Turbidity Meters, Digital D.O. Meters, Water & Soil Analysis Kits
0 to+ 1999.9mV
+ 1 mV
+ 1 mV +digit
10 to 50oC
3 1/2 Digit 0.5 seven segment LED display Indication