Order F58 Filter Bags by 100 count package quantity (e.g. 10 = 1,000 filter bags). Volume discounts will be applied when added to the shopping cart. Quantity discounts apply at 1000, 5000, and 10,000 quantities.

The F58 filter bag is mainly designed for customers working with small grind size samples (0.5 – 1.0 mm screens) to support NIR analysis and some samples known for significant pulverization during grinding, regardless of screen size. 

The porosity of the F58 filter bags is finer than the F57 but has increased flow capacity because of the type of polymer used to make the filter matrix. The F58 will allow a better flow of chemicals to the sample and reduce artificially high values due to clumping caused by some sample types. Use for crude fiber, neutral detergent fiber, and acid detergent fiber analysis. The bag has not been validated for use in the Daisy Incubator for in vitro studies.

Due to the polymers used, the F58 bag cannot be used to support follow-on assays for nitrogen or 72% H2SO4 lignin.