Turbidity Tube with Secchi Disc, 120cm Scale Length_150mm Sealed transparent cylinder 3

Sealed transparent cylinder 3

5 inches long supports hydrogen and oxygen gas tests

Producing a continuous color spectrum across the pH scale

Handmade wooden spice rack holds twelve 6-inch borosilicate glass test tubes with caps and includes a filling funnel for kitchen-to-lab cross-over gifting

Pink-dotted ends and steel keepers across this 50 x 12mm Alnico cylinder pair simplify pole identification while the keepers preserve field strength during cardboard-box storage

Turbidity Tube with Secchi Disc, 120cm Scale Length_150mm Sealed transparent cylinder 3Used to measure water clarity in streams, ponds, and lakes, this turbidity tube drains through a Hoffman clip hose until the Secchi disc pattern becomes visible from above.