Abstract: A soil test apparatus (1) for testing products in subterranean soil installations. The apparatus includes a container (3) for receiving soil (15) and a product (13) to be buried therein for testing. The container includes a base (5), sides (4, 7) and a top opening adapted directly or indirectly to receive a load. At least one of the sides is configured to permit some movement or deformation under application of the load to the soil in the container so as to simulate larger scale installation conditions. A method of testing products in subterranean soil installations using the soil test apparatus comprises setting up the apparatus to permit some movement or deformation of at least one of the sides (4, 7) under predetermined load conditions. The container is partially filled with soil (15). The product (13) is positioned within the container. The product is buried by the addition of further soil (15). The load is applied to the soil via the top opening of the container.