United Scientific SCDSK1 プラスチックセクチディスク

Excelente producto

Tester la profondeur de l’eau d’un lac

I needed this disc for work (wetland work on Lake Ontario), as we do water quality monitoring quite frequently and had recently lost our metal, heavier duty Secchi disk. The disc itself works as it should, though it is made of thin plastic and probably would not withstand too much hard use and would likely break if dropped on any hard surface or hitting obstructions (i.e. rocks) when lowering in the water. The weight attached to the disk is heavy enough to prevent too much drift in slow-moderate current, making it easier to record measurements in flowing water. The line that came attached to the disk is not the strongest, and the measurement markings made on the ""calibrated" line were incorrect or followed no consistent pattern, so I had to add my own. Otherwise, the disk worked in a pinch and will suffice as advertised.

We use it for water clarity level

Great product. Feels solid, plenty of rope, well weighted disk. It's a really fun activity for all ages to get involved in some citizen science, especially the kids. We will be using it to track the turbidity of the lake at our cabin throughout the year. Makes for a nice activity at your favourite boating/fishing spot as well. Only complaint is that the marks are very difficult to read which makes using it slow and tedious as you end up searching for the mark every foot.