OMA Protocol Review: OMAMAN-56 Sulfites in Shrimp

Figure 3. Screens of the Biotest menu

( e ) From the main screen, the ANALYSIS option leads to the analysis menu: Recondition, Activate, Calibrate, Standard, Verifying Solution, Sample, and Stand By.

Figure 4. Screen of the Analysis menu

Reconditioning, Activation and Calibration of the Biotest Once per day, before analyzing samples, the Biotest must be reconditioned, activated, and

calibrated.

( a ) Reconditioning.-- ( 1 ) Press Recondition, verify the proper placement of the cuvette with the 10 mL of SUL Measurement Solution, add sulfite standard (4 mL of SUL Standard 3 for the 7-30 mg/kg

range; 2 mL of SUL Standard 1 for the 30-150 mg/kg range; or 1 mL of SUL Standard 2 for the 50-300

mg/kg range) into the measurement cuvette and press CONTINUE. ( 2 ) Wait for the equipment to emit

an acoustic signal, press CONTINUE, and once again inject sulfite standard (4 mL of SUL Standard 3 for

the 7-30 mg/kg range; 2 mL of SUL Standard 1 for the 30-150 mg/kg range; or 1 mL of SUL Standard 2 for

the 50-300 mg/kg range) into the measurement cuvette and wait for the process to end. The message

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