Ahlstrom products

Ahlstrom offers high purity extraction thimbles in cellulose for Soxhlet extractions and in glass and quartz for the analysis of environmental pollution.. Cellulose thimbles are high quality sample reservoirs for quality control, research, and analytical applications where solvent extraction of solids and semi-solids must be carried out. The use of a Soxhlet extractor provides a safe method of extraction with toxic and other noxious solvents.

Test papers are impregnated with one or several indicators that show a distinctive color when exposed to a specific condition. They allow a quicker and less expensive test in applications where the accuracy of an electronic pH meter is not needed. Universal pH indicator papers are available in different ranges of pH to give the user the level of accuracy needed. Additional test papers for qualitative determination are also available for industrial application and educational purpose.

Ahlstrom offers qualitative and quantitative filter papers to be used in a variety of analytical methods.  All these papers consist of greater than 95% super refined alpha-cellulose and linter fibers and are produced under tightly controlled manufacturing conditions to provide lot-to-lot reproducibility.

Ahlstrom offers highly absorptive papers to be used as surface protection papers and for many other applications. Ahlstrom LabSorb coated paper is a double-layered surface protection that protects benches and working areas from spilled chemicals, corrosive materials, as well as toxic, infectious or radioactive substances. Spills are quickly absorbed into the surface layer of cellulose material and prevented from penetrating to the surface of the work bench by a thin coating of polyethylene that serves as a carrier for the absorbent layer.

Ahlstrom offers a wide range of binder-free glass and quartz microfiber filters dedicated to environmental analyses as water or air control. Glass and quartz microfiber filters meet the highest requirements for applications including determination of suspended solids in water, PM 10 air monitoring, emission control at high temperature.

Ahlstrom offers a wide variety of syringe filters with several different membranes and sizes to accommodate a variety of sample matrices for demanding sample preparation and microfiltration applications such as: Sample clarification/particulate removal, Filtration of solvents used for chromatography applications, Filtration of biological samples, tissue cultures, proteins and nucleic acids, Sterile filtration and venting. Several hydrophilic and hydrophobic membranes are available: Cellulose Acetate, Regenerated Cellulose, Nylon (Polyamide), PES, PTFE, Glass Fiber, Cellulose Acetate & Glass Prefilter.

Ahlstrom offers membrane filters with a wide variety of polymers, pore sizes and diameters for diverse applications including: particle retention and collection, sterile filtration of solutions, microbiological applications for cell growth and colony counting, particulate analysis, air monitoring applications, microbiological analysis of potable and waste waters. Typical membranes included are: Cellulose Acetate, PTFE, Regenerated Cellulose, Nylon (Polyamide). Ahlstrom supplies Non-Sterile bulk packed and Sterile individually packed specifically designed for routine microbiological quality control.