Hi guys,

My doser is making an awful noise - it sounds like the head is trying to turn but is stuck. The sample water tube is also full and my last kh result was 0dkh! So I'm guessing something went wrong on the last test. Maybe it didn't purge?

Here's a video of the noise. I've raised a ticket but wonder if I might hear back quicker on here.

https://youtu.be/XLmun-A7xcA

Cheers, Alex