Specifications include, but are not limited to: (item 1) - Codeine-D6, 1.0 mg/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant C041) (item 2) - Codeine, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1 ml ampules (equal to Cerilliant C-006) (item 3) - Morphine-D6, 1.0 mg/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant M086) (item 4) Morphine, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1 ml ampules (equal to Cerilliant M-005) (item 5) - Hydrocodone-D3, 1.0 mg/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant H-008) (item 6) - Hydrocodone, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1ml ampules (equal to Cerilliant H-003). (item 7) - Hydromorphone-D3, 1.0 mg/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant H-010) ; (item 10) - Oxycodone, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1ml ampules (equal to Cerilliant O-002) (item 11) - Oxycomorphone-D3, 1.0 mg/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant O-019) (item 12) - Oxymorphone, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1ml ampules (equal to Cerilliant O-004) (item 13) - Fentanyl-D5, 100ug/ml in methanol, certified reference material, 1ml ampule (equal to Cerilliant F001) (item 14) - Fentanyl, 1.0 mg/ml in methanol, certified reference material, 2 ea of 1ml ampules (equal to Cerilliant F-013) (item 15) - Norfentanyl-D5 oxalate, 100ug/ml as free base in methanol, certified reference material, 1ml ampule (equal to Cerilliant N-030) (item 16) - Norfentanyl oxalate, 1.0 mg/ml as free base in methanol, certified reference material, 2 ea of 1ml ampules (equal to Cerilliant N-031) ; (item 17) - Buprenorphine-D4, 1.0 mg/ml in methanol. certified reference material, 1ml ampule (equal to Cerilliant B-908) ; (item 19) - EDDP-D3 perchlorate 1.0 mg/mL (as pyrrolinium) in methanol, certified reference material, 1ml ampule (equal to Cerilliant E062) ; (item 21) - Tapentadol-D3 HCl, 100ug/ml in methanol (as free base), certified reference material, 1ml ampule (equal to Cerilliant T-059).