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Q.1021: What percentage of dry paper is water?
Ans. Believe it or not, all paper even in dry form contain 2 to 10% water depending on type of paper, temperature and relative humidity. Typical copying paper at ambient temperature of 25 0C and relative humidity of 50% (normal air conditioned ), contain 6% water by weight.
| Typical Moisture Values | |
| Grade | % |
| Newsprint | 7.5 - 9.5 |
| Office/Business Paper | 4 -4.5 |
| Marketing Wood Pulp | 10 |
| Printing Paper | 6 -7 |
| Tissue | 2 - 7 |