Water absorbance of paper or board with the Cobb method
This Cobb test measures the water absorption properties of paper and board. The method is not suitable for grades with grammage less than 50 g/m2 or embossed paper. It is also unsuitable for highly water-absorbing papers, such as blotting papers.
The absorption time can be chosen by the customer. The result will be expressed as absorbed water per surface area (in g/m2).
- Suitable sample matrices
- Paper or paperboard with basis weight over 50 g/m2
- Typical turnaround time
- 2 weeks after receiving the samples
- Available quality systems
- Accredited testing laboratory
- Device types
- Standard
- Method expert
Price
Typical price (Excl. VAT):
90 €
We also charge a 97 € service fee per order.
Large batches of samples are eligible for discounts.
Questions? We're happy to help.
Questions? We're happy to help.
Business hours: Mon–Fri 9 AM – 5 PM Finnish time (EST/EEST)
Other tests we offer
Cobb–Unger oil absorbance test for paper and board
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In this absorption test, castor oil is used to evaluate the oil absorbance of a paper or board product. During the analysis, oil is applied on top of the sample with an L&W Cobb sizing tester, and the mass of oil absorbed by a set period is expressed as grams per square meter (g/m2). The Cobb-Unger test is often performed to assess whether the material is suitable for use as packaging for oily foodstuff.
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Read moreOxygen transmission rate (OTR) of packages
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ASTM D3985, ASTM F1927, ASTM F2622-08, …
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Read moreRecyclability of paper and board - Aticelca 501:2023
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Determination of the oxygen transmission rate of paper and cardboard materials. The test is performed on three identical samples to ensure repeatability. Measurement conditions (temperature and relative humidity) can be chosen according to the intended use of the material. The oxygen transmission rate is typically measured at 23 °C and 0% relative humidity as per standard ASTM D3985. In moist conditions, for example at 38 °C and 90% relative humidity, standard ASTM F1927 is used. Please disclose the desired temperature (from 5 °C to 95 °C) and relative humidity (either 0% or 10% to 90%) upon ordering. This measurement is suitable for paper and board materials with OTR values between 0.05 to 5000 cm3/(m2 * day).
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Read more”Excellent service. Measurlabs chose analysis methods for our demanding sample, interpreted the results and delivered a thorough analysis report. We would buy again.”
Antti Tullila, Senior Development Manager, Aidian
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