Cole-Parmer”s line of impact-resistant polycarbonate flowmeters is designed for noncaustic liquids and air. Direct-reading flowmeter models 32900-02 to -54 are economically priced and feature scales in both English and metric units. They have a 10-to-one turndown ratio and are designed to maintain pressures to 100 PSIG and temperatures to 150 F. Liquid flow range is 0.2 to 40 GPH. Air flow range is 0.2 to 60 SCFH. Flowmeter accuracy is +/- 4 percent full scale.