I had the same problem as others. The scale is not stable. If it just drifted up and down a tenth of an ounce it wouldn't be a problem, they all do it with 30lb freon when it's windy outside. This scale only ever went from half an ounce to an ounce at a time compared to my TIF and Robinair scales, they are very stable with very little fluctuation. I ended up sending this one back.
💨 Robinair (15115) VacuMaster Single Stage Vacuum Pump - For Efficient Single-Stage Vacuuming, Delivers 1.5 CFM
9 Review
VIVOHOME 220LB HVAC Electronic Digital Refrigerant Charging Weight Scale – High Precision with Protective Case
9 Review
Lichamp Automotive R1234YF Installer Standard
9 Review
🌬️ UView Airlift Cooling Checker 550000
9 Review