1.% Carbon (Wt. / Vol.) Standard Back Catalog number: 50782 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MI507-100 Reagent kit for 100 tests (Ammonia LR) Contains: 1 x 20mL NH3-1, 1 x 21mL NH3-2 Price on request 50829 Laboratory Spike Solution Price on request 30094 EPA Method 551Mix “A” Price on request