1. Measurements can be made with a few drops of the sample.
2. No special training or knowledge is required.
3. Accurate determinations can be obtained within a few seconds.
4. The refractive index scale makes it possible to measure the concentration of other solutions.
5. Its pocket size makes it very handy to carry anywhere.

Serum protein scale: 0-12g/100ml.
Minimum scale of serum protein: 0.2g/100ml.
Refractive index scale: 1.333-1.360.
Size: 4 x 4 x 18cm.
Weight: 170g
Accessories: Case and an adjusting screwdriver.

1. Before measuring the serum protein concentration, the instrument should be checked as follows:
Raise the daylight plate and place a few drops of distilled water on the surface of the prism. Close the daylight plate gently. Bring the scale into focus by turning the eyepiece. If the instrument is correctly adjusted at 20°C, the boundary line should coincide with the "W1" line or 1.333 refractive index line. If it does not coincide, adjust the boundary line by turning the adjusting screw with the screwdriver provided.

2. Wipe off the distilled water with a soft tissue and place a few drops of the sample (serum) on the surface of the prism. Read the point on the serum protein scale where the boundary line falls.