Kartell 227145 Paddlewheel Laboratory Gas Flow Indicator/Liquid Flow Indicator</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Dimensions (L x W x H): 3.5 x 0.625 x 1.625 inch- provides uninterrupted usage</li><li>Polystyrene prolongs durability and usage</li><li>Indicates liquid or gas flow from 5mL per second to 95mL per second</li><li>Not for use with corrosive fluids or temperatures over 122°F (50°C)</li><li>Can be used to connect tubing  with internal dimensions of 3/8 to 9/16 inch (10-14mm)</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41jOMu%2BWqfL.jpg' noproxy></br>