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DiatoSorb and Chromosorb Diatomaceous Earth Columns (nonbonded stationary phase packed columns)

...DiatoSorb and Chromosorb Diatomaceous Earth Columns ... .Restek has replaced Chromosorb W with DiatoSorb-W diatomaceous earth as the solid support material in its...

DiatoSorb Diatomaceous Earth Columns (bonded stationary phase packed columns)

....Restek has replaced Chromosorb W with DiatoSorb-W diatomaceous earth as the solid support material in its...

20% TCEP on 80/100 Chromosorb PAW

...Micropacked GC Column 20% TCEP Chromosorb PAW 80/100 0.56m, 0.75mm ID...

DiatoSorb-W Diatomaceous Earth: Great Chromatography Millions of Years in the Making (PDF 1812kB)

... using packed column methods have depended heavily on diatomaceous earth brands (e.g., Chromosorb -performance (WHP) varieties. Restek has now replaced white Chromosorb solid support with DiatoSorb-W solid support ... "diatomaceous earth column", Chromosorb...

DiatoSorb-W Diatomaceous Earth: Great Chromatography Millions of Years in the Making

... using packed column methods have depended heavily on diatomaceous earth brands (e.g., Chromosorb -performance (WHP) varieties. Restek has now replaced white Chromosorb solid support with DiatoSorb-W solid support ... Chromosorb, "diatomaceous earth column"...

Analyzing Oxygenates in Gasoline Using TCEP and Rtx-1/MXT-1 Columns (PDF 71kB)

.... total heavy hydrocarbons min. 10 GCPC00194 20 0.56m, 0.75mm ID 20% TCEP on Chromosorb P A/W (cat ., 200 ft., and 400 ft. For OFID Procedure: Micropacked TCEP Column ID 20% TCEP on 80/100 Chromosorb...

ChromaBLOGraphy: A brief introduction to DiatoSorb-W

. DiatoSorb-W is a diatomaceous earth material that Restek will sell in packed columns and as a coated packing material (% loading with a liquid phase of your choice), which will replace Chromosorb-W products/packings. For those of you who may not know, the “W” stands for “white”, and is simply the color of the untreated, uncoated […]

ASTM Petrochemical Method Chromatography Product Guide (PDF 1598kB)

...) Micropacked with 20% TCEP on 80/100 Chromosorb PAW 0.56 m x 0.75 mm ID x 1/16" OD - cat.# 19040 and Rtx-1 Aromatics in Finished Gasoline by Gas Chromatography Micropacked with 20% TCEP on 80/100 Chromosorb PAW 0...

Thermal Desorption: A Practical Applications Guide: I. Environmental Air Monitoring and Occupational Health & Safety (PDF 1087kB)

... Typical TD-GC analytical conditions: Sampling: Diffusive or pumped Typical sorbent: Tenax or Chromosorb...

ChromaBLOGraphy: Maximum temperatures of packed columns – Porous Polymers

We often get asked about the maximum temperature limit of our packed columns, so I decided to write a post series which will provide this information for the majority of the packed columns which we sell.  I thought I would start with the least complicated packed columns, those whose packings are typically not coated with a […]

ChromaBLOGraphy: Maximum temperatures of packed columns – Hydrocarbon Analysis

For my third post in this series, I would like to focus on specialty packed columns for hydrocarbon analysis.  In some cases, the packings in these columns are proprietary, so detailed information cannot be provided.  In other cases, application information may be limited.  However, we can provide maximum temperature limits (see table below). For other […]

ChromaBLOGraphy: Maximum temperatures of packed columns – Sulfur Gases

For my fifth and final post in this series, I would like to focus on packed columns for light sulfur gases.  Compounds include (but not limited to) hydrogen sulfide, sulfur hexafluoride, carbonyl sulfide, sulfur dioxide, methyl mercaptan, ethyl mercaptan, etc. Because some analysts prefer PTFE tubing and/or PTFE frits for their columns, the maximum temperature […]

ChromaBLOGraphy: Maximum temperatures of packed columns – Liquid Phases

For my second post in this series, I would like to focus on liquid phases.  As you know, for packed columns, a liquid phase needs a solid support.  Combined, these are what makes the “packing”.  In most cases, it is the liquid phase which limits the packed column’s maximum temperature, and not the solid support. […]

ASTM Petrochemical Method Chromatography Product Guide

... Chromatography (Oxygenates) Micropacked with 20% TCEP on 80/100 Chromosorb PAW0.56 m x 0 by Gas Chromatography Micropacked with 20% TCEP on 80/100 Chromosorb PAW0.56 m x 0...

ChromaBLOGraphy: How to choose the correct GC column – Part 2

My last post looked at how to use published boiling points of compounds to help select a GC column. In this post, I will be discussing the role of compound polarity when selecting a GC column.   To briefly summarize my column selection process (discussed in Part 1 http://blog.restek.com/?p=5426 )   My four categories of [...]

ChromaBLOGraphy: How to choose the correct GC column – Part 4

In Parts 1-3, I explained the process I use to help select the correct GC column. Hopefully it has provided a foundation of how someone may go about choosing an appropriate column for a particular compound, or group of compounds. For the fourth and final post in my series, I would like to present a [...]

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Petroleum Oxygenates (ASTM D4815) on TCEP (Micropacked) & Rtx-1

GC_PC00194

Column: 20% TCEP on 80/100 Chromosorb PAW 0.56 m, 0.75 mm ID (cat.# 19040), and Rtx-1 (connected in series) 30 m, 0.53 mm ID, 3.00 µm (cat.# 10185)
Injector: Split
Detector: FID

Aromatics, Aliphatics on 10% TCEP 100/120 Chromosorb® PAW

GC_PC00217

Column: SilcoSmooth™ Tubing, 100/120 mesh on Chromosorb® PAW, 2.5m, 1/8in. OD, 2 mm ID
Injector: On-Column - Packed
Detector: FID

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