pH and free & total photometer Mi411-R Back Catalog number: MI411-R Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MI405 Ammonia medium range photometer Mi405 Price on request MR9600-470 Filter for Accuris Microplate Reader, 470 nm Price on request NS1020-T 0.5mL Fluorescence Detection Tubes, pack of 250 Price on request