Whatman，實驗室分離產品的開發和創新者。從濾紙和濾器，到微生物學和色譜產品，Whatman創新的產品和方法使生命科學領域中的科學家，工程師和醫護工作者能夠更簡便，更快捷，更精確，更安全的進行他們的工作。無論是在藥物成分分析，物質純化和鑒定，還是環境應用中的非細胞樣品制備，無論何處何地，Whatman公司以其高質量，可靠和創新的產品。
nCellulose Filter 濾紙系列
lQualitative Filter Papers - Standard Grades 定型濾紙-標準級
lQualitative Filter Papers - Wet Strengthened Grades 濕強定性濾紙
lQualitative Filter Papers - Folded (Prepleated Grades) 定性濾紙-折疊（摺狀級）
lQuantitative Filter Papers - Ashless Grades (Ash 0.007%) 無灰級定量濾紙
lQuantitative Filter Papers - Hardened Low Ash Grades 硬化低灰定量濾紙
lQuantitative Filter Papers - Hardened Ashless Grades 硬化無灰級別定量濾紙
lFilter Papers for Technical Use 工業應用濾紙
lApplication Specific Filters 特殊應用濾紙
| Cellulose Filter Selection - Trace Elements: typical values (ug/g of paper) | |||||||
| Grade | 1 | 42 | 542 | Grade | 1 | 42 | 542 |
| Aluminum | < 0.5 | 2 | 1 | Iron | 5 | 6 | 3 |
| Antimony | < 0.02 | < 0.02 | < 0.02 | Lead | 0.3 | 0.2 | 0.1 |
| Arsenic | < 0.02 | < 0.02 | < 0.02 | Magnesium | 7 | 1.8 | 0.7 |
| Barium | < 1 | < 1 | < 1 | Manganese | 0.06 | 0.05 | 0.05 |
| Boron | 1 | 1 | 2 | Mercury | < 0.005 | < 0.005 | < 0.005 |
| Bromine | 1 | 1 | 1 | Nitrogen | 23 | 12 | 260 |
| Calcium | 185 | 13 | 8 | Potassium | 3 | 1.5 | 0.6 |
| Chlorine | 130 | 80 | 55 | Silicon | 20 | < 2 | < 2 |
| Chromium | 0.3 | 0.3 | 0.7 | Sodium | 160 | 33 | 8 |
| Copper | 1.2 | 0.3 | 0.2 | Sulfur | 15 | < 5 | < 2 |
| Fluorine | 0.1 | 0.2 | 0.3 | Zinc | 2.4 | 0.6 | 0.3 |
環保在線