Calibration of Antibiotic Zone Reader
- PROCEDURE
- Precautions
- Check the cleaning status of antibiotic zone reader.
- Check the calibration status of vernier caliper.
- Calibration of Antibiotic Zone Reader
- Connect the cord of the instrument to the mains socket and switch ON the main supply.
- Switch ‘ON’ the instrument button.
- Take a clean & dry petri dish and mark the four circles on the base of plate with the help of marker.
- Marked circles shall be denoted as A, B, C and D.
- Turn the left side drum to its maximum position to set the zero marking on the scale.
- Place the marked petri dish on the aluminum plate of instrument and rotate it manually with the help of rotator so that one end of the circle image touches the mark line on the prism.
- Now turn the left side drum slowly in anti-clockwise direction till the other end of the circle image touches the mark line on the prism.
- Note down the reading in the annexure which is indicated by the right side scale.
- Remove the petri dish from instrument and take the reading of circle by the calibrated vernier caliper.
- Note down the reading in the annexure which is displayed by the vernier caliper.
- After successful calibration, affix the calibration label.
- Acceptance criteria: Difference between zone reader reading and vernier caliper reading shall be ± 0.2 mm in diameter.
- Frequency: Once in a month.
- ABBREVIATION(s)
| Abbreviation | Full Description |
| SOP | Standard Operating Procedure |
| mm | Millimeter |
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