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Manual polarimeter
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Product: Views:25Manual polarimeter 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2017-12-15 13:01
Model Number: 318-A001 Key Specifications/Special Features: Prior to use:Before plugging the plug into the power outlet, ensure that local mains power voltage matches the polarimeter requirementsClose the lid of polarimeter, press the power switch to on position, the sodium lamp will gradually light upWait for the light source to stabilize, rotate the focus knob until visual field became legibleRotate the vernier knob makes the vernier scale aim at zero positionRecording:
  • Place an empty test tube into the sample chamber
  • Rotate vernier knob until the visual field appears uniform brightness
  • Record the measured value of reference point
  • Filling the sample solution:
    • Take out the test tube from sample chamber, unscrew the cap, remove the sealing ring and glass disc
    • Rinse the test tube thoroughly with distilled water
    • Pour sample solution into the test tube, then screw on the test tube cap
    • Wipe away the drops of water on glass disc
    • If necessary collect all air bubbles into the bubble trap
    • Open the lid of polarimeter, place the test tube into the sample chamber, the bubble trap is upward
    • Close the lid, clockwise or anticlockwise rotate vernier knob until the visual field appears uniform brightness
    • Record the measured value
    • Repeat above measurements 2 times and calculate the average of measured values
    • Calculation: if the measured values are positive angle (dextrorotatory substance), minus the value of the reference point shall be the actual measured value of the substance
    • If the measured values are negative angle (levorotatory substance), minus the 180° shall be the actual value ofthe substance
  • Determination of the concentration:
    • After the measurement, if you need to determine purity, concentration or proportion of the sample, use the following formula
    • α=[α]LC
    • α: optical rotation
    • [α]: specific rotation
    • L: tube length (dm)
    • C: concentration (g/L)
  • Replacing the sodium lamp
  • Before replacing the sodium lamp, be sure to disconnect the power plug from the wall outlet
  • Wait for the sodium lamp to cool down, remove the lamp cover of polarimeter
  • Pull the sodium lamp from the socket
  • Insert a new lamp into the socket
  • Replace the lamp cover again in such a way that the window point in the direction of the polarizer
  • Shipping Information:
    • FOB Port: Shanghai
    • Lead Time: 30 - 35 days
    Main Export Markets:
    • Central/South America
    • Eastern Europe
    • North America
    • Mid East/Africa
    • Asia
    • Western Europe
    • Australasia