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| Product Name | ChangChunYongXin ZQX-1000 Paper Air Permeability Tester | YunDa YD-TQD-A Paper permeability Tester (7 inch screen) |
| Product Price | $935.00 | $4269.00 |
| Details | Details | |
| Model comparison | ||
| Measurement method | Shopper method | Shopper method Graleifa Bentson |
| Parameter comparison | ||
| Measurement Range | 0~1000 mL/min | 0~2500mL/min、0.01~42μm/(Pa•s) |
| test area | 10±0.02 cm² | 10cm² |
| Differential pressure in test area | 1±0.01 kPa | |
| Measurement accuracy | Less than 100mL, Volume error of 1 mL, greater than 100 mL, Volume error of 5 mL | |
| Inner diameter of clamp ring | 35.68±0.05mm | |
| Coaxiality of center hole of upper and lower clamping ring | ＜0.05mm | |
