Labfil Filter Papers
Our filter papers are manufactured in Europe and only the finest raw materials are selected and strictly quality controlled at reception to ensure that only the purest ingredients of cellulose with a high alpha cellulose content are always used. The automated manufacture with on line monitoring, confirmed with laboratory analysis ensures consistency in each tested aspect and that the strict standards are met.
The mill produces according to Good Manufacturing Practices and ISO 46002. Each step of the manufacturing process, from incoming materials through to the final material is documented, validated and controlled. All the filter papers exhibit high wet strength and so can be used comfortably in filter presses, Buchner funnels or other vacuum apparatus as well as conventional filtration using gravity. They are all bleached white and have smooth surfaces enabling the scraping or spraying of precipitates off their surfaces. They also offer heat tolerance and can be dried in an oven. They are all available in packs of 100 in flat disks or folded, in many diameters ranging from 10 mm to 500mm. Custom sizes are available on request.
General Purpose Filter Papers (QF, QM, QS)
Used for qualitative or less critical applications.
Ashless Hardened Filter Papers (AHF, AHM, AHS)
Used for quantitative applications. They are excellent for applications where trace level detection or ashing is required. They work well in applications where ashlessness and hardness are required and also where only ashlessness is required. They also work well where strong acidic or alkaline solutions are being filtered.
Industrial Grades (IST, IWS, IHD)
Industrial standard (IST), industrial wet strengthened (IWS) and industrial heavy duty (IHD) filter papers are used for less sensitive but low cost analytical work.
Specialised Papers (PSE, STP, HRT)
The silicone impregnated phase separating papers (PSE) are hydrophobicpapers which are ideal for the separating of aqueous solutions from organic solutions. Soil Testing papers (STP) are ideal for routine leaf and soil analysis. Thick high retention papers (HRT) are used for absorbtion or other specialised applications.
Reinforced Glass Fibre (RGF)
Glass microfibre filters are made with very fine fibres to allow high efficiency and high dirt holding capacity. They are non-hygroscopic and biologically inert and exhibit a wide chemical compatibly. These thick retentive glass fibre filters offer high wet strength and low fibre loss.Their specifications meet the specifications required in SABS method 1049:1990 for the analysis of suspended solids content having the nominal pore size 1.0 μm (+- 0.2 μm) They are offered in 100 packs and in diameters ranging from 10 mm to 320 mm.
Extraction Thimbles (EXT)
These are made from pure cotton fibre (cellulose) and are outstanding for their mechanical resistance and excellent retention capacity. They are commonly used in applications such as fat extraction using Soxhlet apparatus, and other extraction applications. They are available in a range of wall thicknesses and lengths from 60 mm to 250 mm and internal diameters from 10 mm to 75 mm. Glass fiber and quartz fibre extraction thimbles are also available.
This is a filter paper embossed onto a chemically resistant strong polyethylene backing. It is designed for the protection of laboratory benches, shelves and storage cupboards from spills, stains and minor burns. It will not delaminate when wet and is offered in rolls of 500 mm wide and lengths of25 m, 50 m, and 100 m. Sheets are also available with dimensions 500 mm X 600 mm and 500 mm X 500 mm in packs of 100.