Sabary Secchi Disk Water Clarity Measurement Kit with Calibrated Line

Features: The set includes one black EVA line winder. This winder helps keep the 20 meter nylon rope organized and tangle free after each use, making transport and handling more convenient during field work or classroom activities. From small aquariums to large lakes and reservoirs, this secchi disk kit works in diverse settings. It supports water quality observation in aquaculture ponds, rivers, shorelines, and outdoor field sites, providing a practical tool for environmental learning and testing. Specifications: Material: acrylic, stainless steel, nylon Color: black, white Style: classic Department: unisex Size: Secchi disk: about 7.87 inches/ 20 cm in diameter Calibrated line: about 65.6 foot/ 20 m in length Package includes: 1 x Secchi disk 1 x Calibrated line 1 x Counterweight Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays

• Complete Ready-to-apply Measurement Kit: everything needed for water transparency testing is included in one package, the 7.87-inch secchi disk, 65.6-foot calibrated nylon line, and stainless steel cone weight, pre-assembled and ready for immediate apply in the field; No additional equipment, rope, or weights required; Compact and lightweight design makes the kit easy to carry in a field bag for lakeside monitoring stations, aquaculture farm visits, environmental surveys, and school field trips
• 65.6 ft Calibrated Line for Deep Water Measurement: the water transparency test included 65.6-foot nylon rope features clearly marked measurement intervals, allowing accurate Secchi depth readings in lakes, reservoirs, rivers, and deep ponds; Each foot marker is firmly printed and water-resistant to maintain legibility after repeated submersion; Suitable for professional limnology fieldwork, water management monitoring, and classroom aquatic science experiments
• Stainless Steel Cone Weight for Stable Vertical Descent: unlike plastic weights applied in most competing Secchi disk kits, the included stainless steel cone-shaped sinker ensures the disk sinks in a straight, stable vertical path even in mild current or wind conditions; Consistent vertical descent eliminates tilting errors and delivers more repeatable, scientifically valid transparency readings; The cone profile reduces water resistance during retrieval for easier pulls from depth
• Standard 7.87-inch Black White Quadrant Disk: the 7.87-inch (20 cm) diameter secchi disk follows the internationally recognized Secchi disk standard applied in freshwater limnology and water quality research worldwide; The high-contrast black and white quadrant pattern provides a clear visual threshold for determining the precise depth at which the disk disappears and reappears, enabling consistent monitoring of turbidity, algae bloom development, and suspended sediment changes over time
• Versatile Apply Across Freshwater and Aquatic Environments: the secchi disc kit designed for apply in lakes, ponds, rivers, reservoirs, aquariums, fish farms, aquaculture ponds, drinking water sources, and recreational swimming areas; Ideal for fishery managers monitoring bass and trout habitat clarity, pond owners tracking algae bloom cycles, environmental science students conducting field studies, water utility staff performing routine turbidity checks