Sample storage device used before microwave digestion of petroleum products

The utility model provides a sample storage device before microwave digestion of petroleum products, which comprises a storage box, a storage tank, a cover plate and a fixing plate, two partition plates are arranged in the storage box, the two partition plates divide the interior of the storage box into a storage area I, a storage area II and a storage area III from right to left, and the storage area I, the storage area II and the storage area III are arranged in the storage box. Two round holes are formed in each fixing plate, connecting springs are connected into the connecting grooves, the other ends of the connecting springs are connected with clamping plates, the storage tank is placed among the four clamping plates, and the cover plate is arranged at the upper end of the outer portion of the storage box. Compared with the prior art, the petroleum product sample storage device has the following beneficial effects that different types of petroleum product samples can be conveniently classified and placed