If your Palm Abbe Digital Refractometer won’t power on, check the battery polarity. If the polarity is correct and the refractometer will still not power on, change the battery. If it still doesn’t work, call MISCO tech-support at 216-831-1000.

For more information about refractometer care, maintenance, and troubleshooting, please see the following MISCO page: Digital Handheld Refractometer Training.