Fieldmaster (Educational Use) Secchi Disk, 20 cm Diameter with 20m Line Clothing -Two pockets at front with

-Two pockets at front with flaps

and aren't fazed by a little time off it

Product Code: HI98331

Resistant to many dilute acids

Product Code: 77222

Fieldmaster (Educational Use) Secchi Disk, 20 cm Diameter with 20m Line Clothing -Two pockets at front withProduct Code: 623 2010 The 623 2010 Fieldmaster Secchi Disk Kit is an economical, student friendly limnological Secchi disk designed to measure water transparency, turbidity and light penetration in lakes, ponds, reservoirs and slow moving rivers. Built to the accepted industry standard, the 200 mm (7 7 8 in.) diameter disk features four quadrantstwo black and two whiteto provide consistent, repeatable water clarity measurements that can be compared