Watermark Vertical Polycarbonate Sampler Kit
- Messenger-activated release mechanism has integral cable clamps allowing samplers to be easily attached to any point on line
- Constructed of clear polycarbonate, polyethylene and silicone
- EPA approved for ultra-clean analysis of water, including trace metals and organics
|77902||Vertical polycarbonate water bottle sampler kit, 2.2L|
|Usually ships in 3-5 days|
|78903||Spare parts for 2.2L & 5L water bottles|
|Usually ships in 3-5 days|
For free-flushing and in-series deployments, this vertical bottle collects water samples at any depth. It features a messenger-activated release mechanism has integral cable clamps allowing samplers to be easily attached to any point on line.
Note: In-series deployments of multiple bottles on a single line require 333g split bronze messengers with lanyards (sold separately).
- (1) 2.2 liter vertical bottle
- (1) 20.0m nylon cord
- (1) Line reel
- (1) 250g solid bronze messenger
- (1) Plastic carrying case
The messenger is a brass weight with a hole through it that is threaded onto the cord (much like a large metal bead). When you are ready to take the sample, let the messenger slide down the line where it will trigger the release mechanism to close the sampler bottle. As it remains on the line once deployed (it will rest on top of the release mechanism until retrieved) it will not get lost during sampling. Care should be taken not to lose the messenger prior to sampling (don't remove it from the line while setting up or storing).
In The News
In 2012, for maybe the first time, Lake Superior got scummy.
Visitors to the Apostle Islands National Lakeshore reported algae washing up on shore around the park.
It was a marked shift for the park, made up of a portion of the Lake Superior lakeshore and nearby islands. The water surrounding the park is cold, clear and typically low in nutrients: a combination unlikely to result in algal blooms.
But, in 2012 and again in 2018 after violent storms, major algal blooms—ones observed over multiple days—washed ashore and clogged the beaches with unsightly, scummy algae.
Not the usual suspects
The algal blooms of Lake Superior are not the algal blooms of warmer, more nutrient-rich lakes like Lake Erie.Read More
*This is part two of a series on changing ancient lakes. See part one, Lake Baikal, here .
Ancient lakes are facing a suite of rapid, unprecedented anthropogenic changes. While ancient lakes are spread around the world and vary widely from lake to lake, their incredible age, which can reach into the tens of millions of years, makes them unique resources to science.
They host incredible biodiversity and long sediment records. They are vital sources of food and water for millions of people. In a changing world, ancient lakes’ value as scientific and natural resources and the incredibly diverse life they contain is under threat.Read More
*This is part one of a two part story on ancient lakes. Part two , Lake Tanganyika, available here.
Lakes that have supported human settlements for thousands of years are starting to feel humans’ effects in rapidly developing and significant ways.
From climate change to nutrient loading to plastic pollution, ancient lakes are straining under some of the least welcome contributions of humanity. The changes could have consequences for the diversity of life within the lakes and the human populations that rely on it.
And, while ancient lakes have been around long enough to weather past climatic changes, the changes occurring now are so rapid, the end result is uncertain.Read More