How to use oil&glass calibrate honey refractometer?
Note: Honey reractometer calibrate need special calibration oil and stone, it’s not a standard configuration on packing. All refractometers are calibrated before send out, so usually no need to calibrate it.
1. Firstly, the dioptric oil can attack the daylight plate(all plastic and rubber),please keep it away from the daylight. With repeated contact, the dioptric oil can cause cracking and fogging of the daylight plate. When you do the calibration, the
calibration stone (reference block) must be used and it will act as daylight plate.
2. Drop one drop of dioptric oil on the long-sided surface of calibration stone (reference block). Open the daylight plate, stick the calibration stone(oily side down) on the surface of the prism, and press it lightly with
your hand, so that it can not slide down. Rotate and adjust the calibration screw to make the white and blue boundary coincide with the reference reading: water 19.6% or 78.8% brix (See below table):
| Model | Specification | Calibration point | |
| Honey Refractometer | RHF-25 | 13-25% Water | 19.6% Water |
| RHF-30 | 10-30%Water | 19.6% Water | |
| RHB-90 | 58-90%Brix 38-43 Be’, 12-27% Water |
78.8% Brix | |
| RHB-90N | 58-90%Brix 12-32% Water |
78.8% Brix | |
| RHB-92T | 58-92%Brix 38-43 Be’, 12-27% Water |
78.8% Brix | |
| RHB-82 | 45-82% Brix | 78.8% Brix | |
| RHB-92 | 58-92% Brix | 78.8% Brix | |
3. You're done! The unit is now ready to accurately test whatever you need!
