Cannon Instrument D155 Density Meter - Manual (Page 26)

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3-5. Procedure after a day’s measurements
When the day’s work of measurement is completed, the measuring cell needs to be cleaned with the
cleaning solution/solvent and be filled with pure water in order to avoid contamination on the glass
measurement cell walls:
1) Clean the measuring cell according to the steps in Section 3-4.
2) When certain oily substances or deposits are adhered to the cell, follow the steps in Section 5-1-1.
3) Fill the measuring cell with pure water:
a. If using the optional peristaltic pump, put the sampling tube into pure water and press [PUMP]
key to draw water into the cell. When the cell is filled with pure water, press [PUMP] key to
stop the pump.
a. If using a syringe, inject two full 10mL syringes so that a total of 20 mL is flushed through the
cell.
When the unit is not used longer than one week, the cell should be filled with 99% or higher
concentration of Ethanol instead of pure water in order to avoid the growth of mold inside the cell.
Note:
When the cell is filled with Ethanol for storage, flush the inside cell with
at least 20mL pure water using either a syringe or the [PUMP] key if using
the optional peristaltic pump before starting next calibration or
measurement. If the residue of Ethanol remains in the cell or tube lines,
correct calibration or measurement cannot be performed.
CANNON ® D155 Density Meter Instruction & Operation Manual
Version 1.1b – August 2014; CANNON® Instrument Company
2139 High Tech Road • State College, PA • 16803 • USA