Polarographic Probe Maintenance

[@pocongBalaap]

Kaso'on kang 👍👍🤭

[@rachelstrecker-lau3878]

Thanks so much for this video. This was far more informative than what was on YSI's channel. Our probe is now reading properly again and is as good as new.

[@Tanawat1551]

ขอบคุณ​ครับ🙏