WATER SAMPLER Description: Ideal for water sampling at any depth, zooplankton collections, and secchi disc transparency measurements. Kit includes: clear polycarbonate 1.0 liter water sampler, 200g messenger, 20 cm limnological secchi disc; armored thermometer (liquid spirit filled, -5°C to +40°C in 0.5° increments); student plankton net (20 cm diameter x 60 cm length x 153 µm); three 20.0m nylon cords, line reels, plastic carrying case, and instructions.