TruFlo Sample Monitor 0.05 mL/min. This TruFlo Sample Monitor provides a measurable flow range of 0-0.05 mL/min, a calibrated flow range is 0.001-0.05 mL/min, & has an internal volume of 0.033 mL. Made from quartz (low background for B and other elements in borosilicate glass) and PEEK, the TruFlo is an indispensable diagnostic tool providing continuous real-time sample flow measurement, sounds out-of-range alarm, stores 24 hours of data, is ideal for sample introduction by peristaltic pump or natural aspiration, & is suitable for all ICP-OES and ICP-MS instruments. Do you ever need to repeat the analysis of a sample due to a blocked nebulizer, worn peristaltic pump tubing, or incorrect pressure of the pump tubing clamp? With the digital display of the TruFlo Sample Monitor, you always know the actual rate of sample uptake to your nebulizer. For HF compatible models see 501907284, 501907285, and 501907286.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001