The ASTM F2815-10 standard, published by the American Society for Testing and Materials (ASTM), describes the calculation of all permeability parameters related to the test methods in the following three standards using a computer program called the permeability calculator:
However, this standard was withdrawn from implementation in 2019, unchanged due to its limited use by businesses.
The practice described in the ASTM F2815-10 standard applies to both open loop and closed loop permeability tests. Closed loop testing includes continuous and discrete sampling. In the open loop permeability test, the computer program also uses permeability data files with variable sampling flow rate.
Analysis of data using a computer program applies to the most typical penetration behavior i.e. Type A where the rate of penetration is fixed. This practice is not applicable for other penetration behaviors.
Before this computer program was developed, data analysis for the permeability test of chemical protective clothing was done in different ways by manual methods or by methods developed in-house. Whereas, in this way, the differences in calculating the penetration time by manual methods were revealed by 25 percent or more. This raised the question of whether a piece of clothing could be worn for less than six or eight hours before dangerous chemicals could damage the skin. On the other hand, calculations of some permeability parameters, such as standardized transition time and cumulative permeability for an open loop test, are mathematically complex and it takes time to perform these calculations without a computer program. In this respect, the computer program has been seen as a user-friendly tool for data analysis.
With the experience gained over many years, our organization also provides services in the evaluation of data analysis using a computer program to determine the chemical permeability of protective clothing materials described in the ASTM F2815-10 standard, within the framework of laboratory services of the materials with a trained and expert staff.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
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