What is the shelf life of pre-mixed electrolyte?
The KOH electrolyte can be stored for a long time (years) as long as the bottle has been kept tightly sealed. If the bottle has been uncapped and left open to air, CO2 from ambient air can deteriorate its capacity to work properly. So if the bottle cap has been kept tightly sealed (even after using some of the electrolyte), it can still be used. Recommendations: 1. Hand tightening the cap and then wrap black electrical tape around the cap/bottle interface to ensure the cap is tightly sealed at all times. 2. Also, if electrolyte has been stored for 2 years, pre-purging with zero N2 gas (meaning bubbling N2 through the electrolyte) for at least 30-45 minutes before use will help with zero off down time. This will drastically shorten the down time.
