Hanna salinity calibration solution

[shadyraro]

Just wondering if you can reuse the hanna calibration solution after you use it, as in put the sachet in a sealed zip lock bag?
I know they say it's a "single use" sachet but if it's still within the expiration date then why waste fluid using it once, and you'll save yourself some money also.

 

[lapin]

Yes you can reuse it. Over time the water will evaporate and the salinity will become stronger. So it will not be accurate. Also try not to contaminate it with any fluid as that will change the salinity.

 

[shadyraro]

Yes you can reuse it. Over time the water will evaporate and the salinity will become stronger. So it will not be accurate. Also try not to contaminate it with any fluid as that will change the salinity.

So you could probably use it 2 or 3 times before it’s no good? I currently calibrate mine once a month.