*= Specialized sampling methods and a large volume of sample are required of vermiculite for accurate results. Ideally, three sub-samples of a one quart bag volume are collected from the bottom settled fraction and composited. DIYSampleTesting.com reserves the right to refuse samples that do not appear to have been collected properly. Inconclusive results may require additional and more expensive test methods to properly characterize the material.
Please contact me for special instructions regarding other testing services
only a postage-stamp sized sample is required for asbestos testing
small samples are recommended for high-risk materials such as insulation