Filmedia® qualitative and quantitative cellulose filters papers are manufactured from high quality cellulose and cotton linters which have been treated to achieve a minimum alpha cellulose content of 98% to maintain guaranteed quality, reproducibility, and uniformity. The filters are tested for basic weight, thickness, air flow, and mechanical strength. They are mainly used for sample clarification or precipitate recovery before material identification or quantification in areas such as pharmaceutical, chemical, environmental testing, food and beverage, mining, cement and many other industries.
Description
Qualitative Cellulose Filter Papers
Waterfiltech offers a wide choice of qualitative cellulose filter papers with different levels of purity, hardness, flow rate, loading capacity, and chemical resistance. Two formats are available: standard filters and wet-strengthened filters.
Specifications of Standard Products
| Complete Pack Size | 100 Pieces |
| Diameter | Customized |
| Typical Particle Retention in Liquid | 2-25µm1) |
| Nominal Thickness | 150–350 µm |
| Nominal Basic Weight | 68-161 g/m2 |
| Nominal Air Flow Rate | 13 – 32 s/100 ml/in2 |
| Nominal Ash Content | 0.06–0.15%2) |
| Material | Cellulose |
| Typical Trace Element Levels | Aluminium 3.6 µg/g
Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g |
| 1)Particle retention rating at 98% efficiency.
2)Ash is determined by ignition of the cellulose filter at 900°C in air. |
|
Specifications of Wet Strengthened Products
| Complete Pack Size | 100 Pieces |
| Diameter | Customized |
| Typical Particle Retention in Liquid | 2-30µm1) |
| Nominal Thickness | 140–420 µm |
| Nominal Basic Weight | 65-125 g/m2 |
| Nominal Air Flow Rate | 2- 7 s/100 ml/in2 |
| Material | Cellulose |
| Typical Trace Element Levels | Aluminium 3.6 µg/g
Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g |
| 1)Particle retention rating at 98% efficiency.
2)Ash is determined by ignition of the cellulose filter at 900°C in air. |
|
Quantitative Cellulose Filter Papers
Waterfiltech Cellulose Filter Papers are very pure filters suitable for a wide range of critical analytic filtration procedures.They are designed to meet your various specific needs.
Specifications
| Complete Pack Size | 100 Pieces |
| Format | Circles |
| Typical Particle Retention in Liquid | 2.5-22µm1) |
| Typical water flow rate | 5-453 ml/min2) |
| Nominal Thickness | 115–220 µm |
| Nominal Basic Weight | 78-100 g/m2 |
| Nominal Air Flow Rate | 3 – 144 s/100 ml/in2 |
| Nominal Ash Content | 0.01–0.015%2) |
| Material | High-quality Cotton Linters |
| Typical Trace Element Levels
|
Aluminium 2.5 µg/g
Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g |
| 1)Particle retention rating at 98% efficiency.
2)Ash is determined by ignition of the cellulose filter at 900°C in air. |
|
