Product description:

The waterproofing property of paper and board was tested. After dropping water into the above test tube, the water trace status was inspected and compared with the standard table, which was used as the basis of waterproof level.
Standard basis: JIS-P8137
Product specification:
* sample: 300*200mm
* sample stage slope: 45 °
* distance between dropper and sample: 10mm
* dropper capacity: 50ml
* dropper amount: 0.1ml per drip
* process length :250mm
* volume (not including dropper) : 25*30*57cm
* weight: 12.5kg