Cobb Paper Water Absorption Performance Tester, Paper Surface Absorption Weight Gauges DH-WA-01

Application:

Paper and paper absorbency testers are conventional instruments for the water absorption test of paper and paperboard, also known as paper surface absorption weight gauges.

Principle:

Paper and paperboard surface water absorption (Cobb) value: the amount of water absorbed by the surface of the paper and paperboard per unit area under a certain pressure and temperature within a specified time, it’s calculated by g/m2. The specific formula is as following: C = (G2-G1) × 100. Where: C-Cobb absorption value, G2-sample mass after water absorption, G1-sample mass before water absorption. The paper and board absorbency tester is a conventional instrument for the water absorption test of paper and paperboard, also known as a paper surface absorption weight tester. This instrument uses the Cobb test method in various methods of absorption test, so it is also called the absorbable absorbability tester.

Standards:

This instrument is designed according to the basic parameters and requirements specified in ISO 535 paper and paperboard - water absorption measurement (Bob method), GB/T1540-2002 paper and paperboard water absorption measurement method. This standard is suitable for determining the water absorption of various paper or board surfaces. It does not apply to the accurate evaluation of the writing performance of paper or cardboard.

1. The cross-sectional area of the metal cylinder is 100±0.2cm2 (the corresponding inner diameter is 112.8±0.2mm).

Cylinder height: 50mm, the contact surface of the cylinder to the sample should be smooth.

2. When the basis weight of the absorbent paper is 200 to 250 g/m 2,the absorption speed is 75 mm/10 min.

When the basis weight of the absorbent paper is less than 200 to 250 g/m2, multiple layers can be used to meet the requirements.

3. Smooth metal flat roll:

The width of the roller is 200±0.5mm,

The mass should be 10 ± 0.5kg.

4. Test water consumption: 100ml ± 5ml

5. Instrument net weight: 28kg

1.Due to the increasing freight shipping cost to some countries, please confirm with customer service before placing an order to see if the delivery address is within the FREE shipping range.

2.Normally orders will be shipped out around 5 working days once payment received. for custom made parts.

needs to be negotiated.

3.We Will ship by DHL, FedEx, UPS, EMS( we will choose the best way to ship the items ASAP). You will be 

updated the tracking number. Generally, it takes 3~7 delivery days to your shipping address.Please make sure 

the phone number is valid.For the customers from Russia.We will use the China~Russia special line.door to door service.DDP term.

4.Kindly please note the tax fee and clearance fee are not included in the item price. You have to take the 

responsibility for the tax and clearance fee.

 We, Dongguan Hongtuo Instrument Co., Ltd, a China based company, are pleased to introduce ourselves as a notable testing equipments and machines manufacturer.Our company was established in the year 2000 with two primarily motto, which includes complete client satisfaction and to reach top-most position in the international market. The exceptional quality of our products like Gold Tester,Gold Testing Machine,Density Meter,Universal Tensile Testing Machine,Climatic Chamber,Melt Flow Index Tester,Charpy Impact Testing Machine,Tap Density Tester,Abrasion Tester,Ultrasonic Flaw Detector,Surface Roughness Tester and other Laboratory Testing Equipment, etc. is our company's USP. 

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