Description
Product Overview
The LaMotte Secchi Turbidity Disk (model 549200) is engineered for precise measurement of water transparency in a wide range of natural and engineered water bodies. Constructed from high‑grade, UV‑resistant polymer, the disk maintains its color and opacity even after repeated exposure to sunlight and harsh field conditions. The disk measures 20 centimeters in diameter and is calibrated to a standard Secchi depth scale, allowing users to compare results across studies and regulatory frameworks. A 20‑meter braided cable, stretch‑resistant and marked at half‑meter and full‑meter intervals, connects the disk to a handheld holder, providing flexibility for deep water assessments up to 20 meters. The product ships in a compact package measuring 11.73 x 11.18 x 5.98 inches and weighs only 0.12 ounces, making it easy to transport in field kits or laboratory storage. Language is English, and the item carries the manufacturer’s one‑year guarantee, underscoring LaMotte’s confidence in durability and performance.
Usage
Designed for environmental scientists, water‑quality technicians, and field engineers, this Secchi Turbidity Disk excels in diverse monitoring scenarios. In freshwater lakes, the disk can be lowered from a small boat or shoreline platform to determine the Secchi depth, a proxy for turbidity that informs ecological health assessments and fisheries management. River and stream applications benefit from the cable’s length, allowing measurements in fast‑flowing sections where a stable platform is unavailable. The disk is also suitable for reservoir and dam monitoring, where operators track sediment influx and algal blooms that affect water treatment processes. In addition to natural water bodies, the device is valuable for wastewater treatment plants, where operators verify the effectiveness of clarification stages. The straightforward visual method—lowering the disk until it disappears from view—requires no power source, making it ideal for remote locations without reliable electricity. Users appreciate the clear markings on the cable, which simplify depth recording and reduce transcription errors during data collection.
Why Choose Us
LaMotte has a long history of delivering high‑quality analytical instruments for laboratory and field use. The Secchi Turbidity Disk reflects this legacy through meticulous material selection, rigorous quality control, and a design that balances simplicity with durability. Unlike generic disks that may warp or fade, the LaMotte disk retains its calibrated opacity for years, ensuring consistent readings across multiple sampling campaigns. The included 20‑meter cable is engineered with a braided, stretch‑resistant construction that resists kinking, a common issue that can compromise depth accuracy. Our one‑year guarantee provides peace of mind, and our responsive customer support team is ready to assist with any technical questions, calibration guidance, or replacement parts. By choosing LaMotte, customers align with a brand recognized by regulatory agencies and research institutions worldwide, reinforcing the credibility of their data and the reliability of their monitoring programs.
Key Features
- Durable UV‑resistant polymer disk maintains calibrated opacity for long‑term field use
- 20 m braided cable with half‑meter and full‑meter markings for precise depth recording
- Lightweight, compact packaging simplifies transport and storage in field kits
- One‑year manufacturer guarantee ensures confidence in product longevity
- Responsive after‑sales support provides technical assistance and replacement parts
FAQ
How do I properly read the Secchi depth with this disk?
Lower the disk vertically into the water while observing it from the surface. Record the depth at which the disk first disappears from view, then note the depth where it reappears as you raise it. The average of these two depths is the Secchi depth, which can be converted to turbidity using standard equations.
Can the 20 m cable be used for measurements deeper than 20 meters?
No. The cable is rated for a maximum length of 20 meters, which aligns with the typical depth range for Secchi measurements in most freshwater and coastal environments. For deeper assessments, a longer cable or alternative instrument is recommended.
What maintenance is required to keep the disk accurate?
After each field session, rinse the disk with fresh water to remove debris and store it in a clean, dry container. Avoid exposure to harsh chemicals that could alter the disk’s color. Periodically inspect the cable for wear and replace it if fraying is observed.
Is this disk suitable for use in saltwater environments?
Yes, the disk’s polymer material is resistant to corrosion and salt exposure, making it appropriate for coastal and marine applications, provided the user follows standard rinsing procedures to remove salt residues after use.
What should I do if the disk becomes damaged or the cable frays?
Contact LaMotte customer support with the product details. Under the one‑year guarantee, a replacement disk or cable will be provided if the damage results from normal use and not from misuse or external forces.
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