Unico 1200 Series User Manual (English)

Questions and Answers:

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Sarah ParkerAug 4, 2025
What to do if my Unico Measuring Instruments device is inoperative?
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  Krista ThomasAug 4, 2025
  If the power indicator on your Unico Measuring Instruments device isn't lit, try these steps: * Ensure the power cord is properly connected to the outlet. If it is, try plugging the instrument into a different power outlet to rule out a dead outlet. * Also, verify that the voltage setting is correct. If the problem persists, it could be due to an internal fuse or a defective electronic component.
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Richard CastilloAug 9, 2025
Why does my Unico Measuring Instruments show incorrect readings?
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  loretta02Aug 9, 2025
  Incorrect readings on your Unico Measuring Instruments can stem from several factors: * Ensure you're using sufficient sample volume in the cuvette. * Verify the analytical procedure and wavelength settings are correct. * Confirm that you've properly performed the blanking (0A/100%T) and 0%T settings. * Also, make sure there are no stray vapors from the sample preparation affecting the readings and that your sample is free of bubbles or particles.
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rodriguezlisaAug 14, 2025
Why is there drift and noise in my Unico Measuring Instruments?
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  Stephen KlineAug 14, 2025
  Drift and noise in your Unico Measuring Instruments can be attributed to: * Insufficient warm-up time. * Significant temperature changes. * Improper lamp adjustment. In such cases, ensure the lamp has been properly installed or has moved during transit and replace the lamp if it is old or defective.
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michelle85Aug 20, 2025
What to do if my Unico Measuring Instruments can not set 100%T (0.000A)?
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  Whitney BarnettAug 20, 2025
  If your Unico Measuring Instruments device is unable to set 100%T (0.000A), consider the following: * Ensure the cuvette adapter is properly placed in the sample compartment to open the sample holder shutter. * Check the sample holder for any misalignment or obstructions blocking the light beam. * If the lamp is old or defective, replace it. * Refer to the lamp replacement instructions to verify the lamp alignment.
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briana33Aug 25, 2025
What to do if %T can not be set to 00.0%T on Unico Measuring Instruments?
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  Autumn FloresAug 26, 2025
  If the %T cannot be set to 00.0%T on your Unico Measuring Instruments, check the following: * Make sure to remove the cuvette adapter or test tube from the sample holder. * The sample holder shutter may be stuck open.
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hansonjenniferAug 30, 2025
Why is there an incorrect transmittance to absorbance correlation in Unico Measuring Instruments?
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  Kathryn GarrisonAug 30, 2025
  An incorrect transmittance to absorbance correlation in your Unico Measuring Instruments may be caused by bubbles or particles in the solution. Check the sample preparation and analytical procedure.

Unico 1200 Series Specifications

General

Wavelength Range	190-1100nm
Spectral Bandwidth	2nm
Detector	Silicon Photodiode
Display	LCD
Storage Temperature	-20-60°C
Model	1200 Series
Type	Spectrophotometer
Photometric Accuracy	±0.3% T
Photometric Range	0-200%T
Light Source	Tungsten Halogen Lamp
Power Requirements	AC 110/220V, 50/60Hz
Measurement Range	0-200% T, -0.3-3.0 Abs, 0-9999 C
Resolution	0.1nm (Wavelength)
Power Supply	AC 110/220V, 50/60Hz