ABOUT PHOSLOCK

Corporate Information

Phoslock Water Solutions Ltd (PWS) is an Australian public company listed on the Australian Stock Exchange (ASX). For information on PWS please refer to Recent ASX Announcements and Annual Reports.

Phoslock trades on the ASX under the ticker symbol "PHK".

PWS owns the Patents and global Trade Mark for ‘Phoslock’.

Phoslock is a modified clay product which removes phosphorus (Filterable Reactive Phosphorus – FRP or Soluble Reactive Phosphorus - SRP) from the water column and sediment pore water of water bodies. By removing the FRP, Phoslock effectively controls the growth and proliferation of algae through limiting one of their essential nutrients. Application of Phoslock in a water body will break existing algal blooms and prevent future blooms.

Phoslock was invented and developed by the Commonwealth Scientific & Industrial Research Organisation (CSIRO), Australia's national scientific organization which has been dedicated to the practical application of knowledge and science for society and industry since 1928 and today ranks in the top one percent of world research bodies in twelve of its twenty-two research fields.

PWS manufactures Phoslock at its joint venture manufacturing operation near Kunming, China.

Phoslock Products

PWS currently manufactures Phoslock granules only. These granules are mixed with water and applied to lakes, rivers, drinking water reservoirs and aquaculture ponds.

Phoslock is made from naturally occurring products. The manufacturing process involves mixing naturally occurring clay (bentonite) with a rare earth element (lanthanum). The lanthanum is absorbed into sites within the bentonite and becomes the active element to remove phosphate.

When Phoslock is applied to a water body, the FRP (Filterable Reactive Phosphorus) present in the water column is attracted to the lanthanum and produces lanthanum phosphate. Lanthanum phosphate is "insoluble", thus locking up the phosphate within the bentonite.

Phoslock works in two ways. Firstly, Phoslock absorbs any FRP contained in the water body itself as it sinks to the bottom. Then, once it has passed through the water column, Phoslock forms a layer on the sediment of the water body that effectively traps any FRP that would normally be released into the overlying water when environmental conditions change.

Once bound within Phoslock's clay matrix, the FRP remains bound over a wide range of pH, salinities and water temperatures.

Phoslock has been subject to extensive eco-toxicity and other testing in a number of countries including Australia, the United States, China and New Zealand. For more information regarding toxicity tests please refer to Toxicity Studies.

For more information on Phoslock please refer to our Frequently Asked Questions (FAQs).