| 摘要 |
A leg spreading element 1 comprises a body with a base portion adapted for mounting on a work surface, the body having a raised portion which, along a first long edge 2a, 2b of the raised portion extends steeply upwardly from the base portion by an angle equal to or exceeding 55 degree , and where the raised portion descends with a shallow side towards the base portion at an edge other than the first long edge 2a, 2b by an angle equal to or less than 55 degree . At least one fluid sampling means 8a, 8b is provided on an exposed face of the element 1 other than the base portion,.
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