a	The spectrophotometers perform built-in wavelength calibration program automatically after energization. Core components will be check during the initialization to ensure the wavelength accuracy and excellent performance
b	Pre-aligned lamp and tungsten lamp for easy lamp replacement. The light source changing point can be set in range of 300nm - 400nm
c	The innovative optical layout ensures accuracy. Its integrated design assures long-term stability and durability. The precisely aligned detector and quality and halogen lamps enhance the precision.
d	Perform basic mode( Abs / %T), quantitative
e	Pre-set wavelength program (4 wavelengths), and one-touch key response
f	Single-point curve calibration and multi-point curve calibration (up to 12 points)
g	Display of fitting degree of curve fitting and concentration data with up to 50 sets of curve parameters storage
h	Display of concentration data with up to 200 sets of data storage
i	Dark current calibration / wavelength calibration/System clock management
j	Backup battery and integrated circuit design controlled by MCU assure non-volatile memory storage
k	USB data communication
l	LPT port for printing
m	128*64 LCD screen to display all of the parameters
n	Sealed and solvent-resistant tactile keypad

Model	MY-B050
Monochromator	C-T type, 1200 L/mm grating
Detector	Silicon detector for ultraviolet visible region
Display	128*64 LCD, Blue color
Light source	discharge tube(2000h), Tungsten lamp(2000h, 20W/12V)
Lamp change point	Can be set, 300 nm - 400 nm
Wavelength range	190-1100 nm, autoscan
Wavelength accuracy	±1.0 nm
Wavelength calibration	Automatic at start
Wavelength display	0.1 nm
Slit width	2 nm
Wavelength repeatability	0.5 nm
Measurement range	-1.0 ~ 200.0%T, -0.5 ~ 3.000Abs, 0 ~ 9999 C, 0 ~ 9999 F
Photometric accuracy	±0.002 Abs (0 to 0.5Abs), ±0.004 Abs (0.5 to 1.0 Abs)
Photometric repeatability	±0.001 Abs (0 to 0.5Abs), ±0.002 Abs (0.5 to 1.0 Abs)
Stray light	0.15 %T (at 220,360 nm)
Baseline flatness	±0.004 Abs
Stability	≤0.002 Abs / h (at 500 nm, after 2 hours energization)
Data output	Digital, USB port, LPT parallel
Spectrum software	Spectrum software, Windows® - based
Power	220V 10% 50Hz 70VA / 110V 10% 60Hz 70VA
Standard sample holder	4-position sample holder
Actual dimensions	456 W X 375 D X 220 H mm, (18.0 W x 14.8 D x 8.7 H in)
Net weight	14.5 Kg (32.0 lbs)
Shipping dimensions	19.5 Kg (43.0 lbs)

Basic Mode		Multi-Wavelength
Absorbance, %T or Concentration measurements.		Up to 15 wavelengths can be selected and multiple samples can be measured. (Auto cell changer is required to run multiple samples automatically).
Quantitative (Standard Curve) Use up to 12 standards to establish standard curve. Four methods for fitting a curve: a. Linear fit b. Linear through zero c. Square fit d. Segmented		Wavelength Scanning Interval: 0.1, 0.2, 0.5, 1, 2, 5 nm Automatically record peaks and valleys. Post-run manipulation and processing includes: a. Re-scaling axes, curve b. Smoothing, combination, zooming, overlap c. 1st to 3rd derivative
Kinetics (Abs vs. Time) The Kinetics 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, measurement time and time intervals may be entered. 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.
DNA/Protein Concentration and DNA purity can be calculated quickly and easily: Absorbance ratios 230nm/260nm/280nm with optional subtracted absorbance at 320nm.

My-B050 Professional UV-Visible Spectrophotometer

Basic Info.