The contracting officer shall insert the clause at 52.246-9004, Product Verification Testing (PVT), in solicitations and contracts which contain the COQC clause and which call for inspection at source. This clause may also be used independently of the COQC clause. Use the clause with its Alternate I in solicitations, negotiated contracts and purchase orders for non-part numbered packaged petroleum products for FSC 9110, 9116, 9150 and 9160 when inspection is at source.