Description
The Nextteq Butyl Ether Tube No. NX147L provides direct measurement of butyl ether from 10–1,200 ppm using a single 100 mL pump stroke and a clear yellow-to-brown color change, with the tube scale calibrated on ethyl acetate and butyl ether concentrations determined via a simple conversion chart. With a 2-year shelf life, a narrow 59–77°F operating range, and calibration by gas chromatography, this tube is well suited for workplace and process monitoring of butyl ether, even though no TLV value is currently listed (TLV: N/A), noting that alcohols, esters, ketones, and aromatic hydrocarbons can produce similar or brown stains and higher readings, while aliphatic hydrocarbons above C3 and halogenated hydrocarbons may turn the entire reagent pale brown without affecting accuracy when the stain endpoint remains discernible.