Test tube holder Back Catalog number: 10501 Availability: In the manufacturer's stock Price on request - + Recommended NS1000-E SmartDrop™ L Nano Spectrophotometer, 230V 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