Description
Kestrel Humidity Calibration Kit Geological & Mining Compasses 5 dwt 7716 gn BR 5008 L 100 5 dwt 7716 gn • Silicon (Si): 0 We do not recommend doing more than 1 unit in the container at a given time The official stance is that calibration is recommended every 24 months due to the possibility of up to 2% calibration drift over 24 months