NOTE E — INVENTORY

Following are the major classes of inventory as of the below dates (in thousands):

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The Company recorded an inventory reserve of $4.8 million for the three and six months ended June 30, 2021, and an inventory reserve of $12.9 million for the three and six months ended June 30, 2020. These amounts are included in cost of products in the accompanying condensed consolidated statements of operations, due to the Company’s evaluation of the inventory’s net realizable value.

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The Company recorded inventory scrap loss reserves of $0.2 million and $0.1 million for the three months ended June 30, 2021 and 2020, respectively. The Company recorded inventory scrap loss reserves of $0.2 million and $0.5 million for the six months ended June 30, 2021 and 2020, respectively, each of which was included in cost of products in the accompanying condensed consolidated statements of operations.