Multi-Element Internal Standard / Back Catalog number: 53319 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MI513-045 Reagent kit for 45 tests (Free & total chlorine HR) Contains: 1 x 115 mL DPD0, 1 x 20mL DPD1, 1 x 20mL DPD3 Price on request C16058000 1,4-Phenylendiamine, 100mg Price on request 70181 Fenamiphos Price on request