Hardened ashless filters, especially recommended for vacuum and pressure filtration, and for the use of acidic and alkaline solutions.
- Acid-washed and rinsed with water
- Free of minerals and metallic ions, ideal for the detection of trace metals
- High wet strength, easy to scrape off or wash off precipitates
- High resistance to aggressive chemical components, like sulphuric and nitric acids (up to 40 % at 50 °C) and alkalis (up to 10 % at 20 °C)
