Description
The Nextteq tert-Butyl Methyl Ether (MTBE) Tube No. NX147L provides direct measurement of MTBE from 25–500 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 MTBE 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 relative to the 50 ppm TLV-TWA guideline, 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.