Palintest Photometer Glass Test Tubes for use with Palintest 9 in 1 25 in 1 7100 and 7500 Photometers. These 10mL round tubes are essential accessories for accurate water testing in pools and spas ensuring compatibility with Palintest's popular water quality analysis instruments. <strong>Features:</strong><p></p><ul><li>Capacity: 10ml GraduatedSize: 20 x 77 mmPack Size: 5 test tubesCompatible with Palintest 9 in 1 25 in 1 7100 and 7500 photometers</li></ul>