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MXT®-1HT SimDist Columns

Cat.# 70112 Columns are Individually Application Tested up to 430 °C for Guaranteed Method Performance.

Accurate determination of the boiling range distribution of medium and heavy fractions using GC simulated distillation provides critical information regarding the composition of crude oil, feed stocks, and other products related to refinery processes. ASTM Methods D6352-12, D7169-11, D7500-12 are often used to characterize petroleum distillates in the boiling range of 174 °C to 735 °C, but these analyses present many challenges to refineries and contract laboratories. Both the column construction and the polydimethylsiloxane (PDMS) polymer must be robust enough to withstand the high method temperatures without significant degradation. In addition, columns must yield a C50/C52 resolution value between 2 and 4, exhibit acceptable peak symmetry, and reliably produce accurate boiling point data.

While other columns on the market are isothermally tested for performance, only Restek provides application-specific testing for all 5 m x 0.53 mm x 0.10 μm MXT®-1HT SimDist columns (cat.# 70112). Since each one is tested up to 430 °C, performance is guaranteed to meet ASTM Method D6352-12, D7169-11, and D7500-12 requirements. The 1HT PDMS phase is designed to achieve bleed of less than 15 pA at 430 °C and has a maximum operating temperature of 450 °C. In addition, the rugged Siltek®-treated MXT® tubing eliminates breakage while ensuring column inertness. Unlike competitor columns, each and every 5 m x 0.53 mm x 0.10 μm column is tested against ASTM method D6352-12 requirements up to 430 °C with Polywax® 655 (C18 – C90 hydrocarbons). QC acceptance criteria include C50/C52 resolution, bleed, and C50 asymmetry (skew). Each cat.# 70112 column you purchase will arrive with a chromatogram like the one below, your assurance that the column will perform as required. Increase lab productivity and confidence in your data with this application-tested MXT®-1HT SimDist column from Restek.

Click here for the full detailed PDF and chromatograms.