Bio-Rad Model 550, Ultramark, and Benchmark Microplate Reader Accessories - Manual (Page 34)

Section 7
Specifications
7.1 Instrument Specifications
Operating panel Membrane keypad with 2 arrow and 6 function keys
Display 2 lines x 16 characters LCD
Printer 20 column, 5 x 7 dot matrix, thermal, built-in
Computer interface Bi-directional, RS-232 serial communication port
Report types Raw, Absorbance, Matrix, Limit, Cutoff, and Concentration
Mixing capability Yes
Photometric methods Single & dual wavelength
Photodetectors 8 silicon photodiodes
Light source Tungsten halogen 20 watt, 5000 hour life
Spectral range 400 nm to 700 nm
Filter capacity Four
Interference filters Bandwidth 10 nm, center wavelength ±3 nm
Standard filters 415 nm and 490 nm
Optional filters 405 nm, 450 nm, 540 nm, 550 nm, 570 nm, 595 nm,
630 nm, 655 nm
Reading speed 25 seconds single wavelength and 50 seconds dual
wavelength
Indication range 0.000 to 3.500 O.D.
Resolution 0.001 O.D.
Accuracy ±1.5% or 0.015 O.D. at 1.000 O.D. for single wavelength
reading
±2.0% or 0.020 O.D. at 1.000 O.D. for dual wavelength
reading
Linearity ±2.0% from 0.000 to 3.000 O.D. at 405 nm
Reproducibility ±1.0% or 0.005 O.D. in the range 0.000 to 3.000 O.D.
Inter-channel variation Less than 1.5% or 0.010 O.D. for 0.000 to 3.000 O.D.
Stability and drift Automatic calibration before each plate reading
Compatible plates Polystyrene flat, U- and V-bottom, and PVC flex plates
Data storage buffer Data from last plate read, and reports
Warm-up time 3 minutes
Assay blanks User-defined or stored assay template
Memory back-up 5 year lithium battery
Self-diagnosis Checks lamp, battery, filter wheel, and plate transport
Line voltage 100-240 volts AC at 47 - 63 Hz
Power consumption 75 volt amps max.
Dimensions 316 x 286 x 130 mm (W x D x H)
Weight 5 kg
Operating temperature 5 to 35 °C
Storage temperature -20 to 50 °C
Operating and 0 - 95% non-condensing
storage humidity
31