Troubleshooting Guide for PR-33-S and PR-33-AC

To troubleshoot K-Patents Refarctometers PR-33-S and PR-33-AC, see the Troubleshooting Guide (pdf).

Once the potential cause for a faulty instrument is determined, please perform the actions described in HF Specific Instrument Service Procedure (pdf).

See also Return Policy and Request for return materials authorization (RMA)