Lovibond Rapid Tests Instruction manual

GLYCOL

Glycol Refractometer Code: 56M000401

A refractometer can be used to measure glycol (antifreeze levels) in closed cooling systems. The instrument measures light refraction by glycol. The greater the concentration of glycol, the greater the refraction. A calibrated scale plate inside the unit gives a direct reading of both concentration (%) and protection level ( o

C) for both mono-propylene glycol and mono-ethylene glycol.

1-Daylight Plate 2-Calibration Screw 3-Focus Adjustment 4-Eyepiece

5-Calibration Screw Block

1.

Focus the refractometer by twisting the focus adjuster (numbered 3).

2.

To calibrate open the daylight plate (numbered 1), place 2 - 3 drops of distilled water onto the plate and close. Wait for approximately 30 seconds and twist the calibration screw (numbered 2) until the light/dark boundary coincides with the zero line.

3.

Using one of the pipettes supplied, obtain a sample of the fluid and place 2 - 3 drops on the daylight plate (numbered 1). Close the daylight plate and read the scale of the light/dark boundary. This measurement is the percentage of glycol and protection level.

4.

After measurement, clean the surface of the plate and lid with a moist cotton cloth