Thomas No. 1204B80 Recommended for 0.5ml,1.5ml, and 2ml tubes Best used with sample volumes below 0.4ml Compatible with all homogenizer models Thomas No. 1204B81 Recommended for 1.5ml, 2ml, and 5ml tubes Volume of 0.4ml or above within 1.5ml tube Compatible with all homogenizer models Thomas No....