1 x 50ml tube holder, pack of 2 Back Catalog number: R4040-500 Manufacturer: BENCHMARK SCIENTIFIC Availability: In the manufacturer's stock Price on request - + Recommended ML610-DIS ML600 SINGLE DISP BASIC Price on request R3010-E TubeRoller with 10 rollers, 230V Price on request H3022-E Incu-Shaker 20LR (Refrigerated) with non-slip rubber mat, 230V Price on request