CR Fast

High-Speed Analysis Solutions

Overview

The CR Fast range is engineered for one purpose: speed. These are GC columns with shorter lengths and/or smaller diameters that allow analyses to be completed in a fraction of the time of a conventional column, while still maintaining adequate resolution. Chrom Science & Technology’s CR Fast columns leverage the fact that all CR stationary phases can be configured in Fast GC format (thanks to robust bonding and high efficiency tubing). The positioning: CR Fast columns are the solution for laboratories looking to dramatically increase throughput or to quickly screen samples with GC. They embody a cutting-edge approach (fast GC is sometimes seen as an advanced technique) but Chrom Science & Technology makes it accessible and method-friendly. The tone here is energetic and efficiency-focused – we want to convey that these columns “turbocharge” your GC without a complicated setup. At the same time, we assure scientifically that resolution and fidelity of data remain high (we’re not just “chopping the column”, we’ve optimized it). CR Fast columns are as much about time savings (a persuasive commercial point: more samples analyzed per day) as they are about technical innovation (e.g., special low dead-volume design, etc.).

Phase Options & Configurations

Rather than entirely new stationary phases, the CR Fast series repackages existing phases (Standard or Plus) in optimized Fast GC dimensions. Any CR phase can potentially be provided in Fast format, but the typical products include:

Columns	Description & Use Case
Short-Length Columns	5 m, 10 m, 15 m, or 20 m columns (compare to conventional 30 m or 60 m). Common examples: CR-1 Fast (10 m x 0.18 mm) for ultrafast light hydrocarbon analysis, CR-5 Fast (20 m x 0.18 mm) for quick semivolatiles screening, etc. These short columns, when coupled with fast oven ramps, can cut analysis time by 2–5x. For instance, a certain cis/trans FAME analysis that normally takes 20 min was demonstrated in 4.5 min using a Fast GC column , showing the potential time savings.
Narrow-Bore Columns	0.10 mm or 0.15 mm ID columns (with appropriate stationary phase film) can produce faster separations due to higher optimal linear velocity. CR Fast offers columns like 0.10 mm ID versions of CR-… phases. These extremely narrow columns have high efficiency per meter, enabling shorter lengths to suffice. Example: a CR-1 (5 m × 0.10 mm × 0.1 µm) can separate C1–C10 hydrocarbons in a few minutes, ideal for fast refinery gas analyses.
Thin Film Phases	To allow rapid elution and avoid excessive retention in short columns, CR Fast columns often use thinner films (0.10–0.20 µm) for quicker equilibrium and sharper peaks. Each CR Fast column is optimized – e.g., a CR-Wax Fast might be 10 m × 0.25 mm but with 0.1 µm film to allow a fast temp ramp without smearing peaks of high boilers.
Integrated Guard in Fast format	Given high linear velocities in Fast GC, inlet focusing is critical. Some CR Fast columns come with an integrated retention gap (guard) as part of design to allow large volume injections or solvent focusing even in short runs. This ties in with the CR IG series (which can overlap with Fast). For example, a 20 m fast column might actually be 15 m analytical + 5 m integrated guard to protect it and improve injections.
Fast GC Kits	Chrom Science & Technology may offer kits or specific configurations as a “Fast GC solution” – e.g., a pair of columns for a GCxGC fast setup, or a column with optimized method parameters. This highlights that CR Fast isn’t just a column, but part of a speed optimization package (though primarily here we describe the columns themselves).

Technical Considerations

CR Fast columns are all about minimizing analysis time while preserving resolution. The physics: shorter column = less resolving power, but smaller diameter = more resolving power; so by shrinking diameter you compensate for shorter length. Operating these columns often involves higher carrier gas flow or head pressure, and very fast oven ramps (e.g., 30–60 °C/min). They are built to withstand these conditions: the polyimide coating and the phase bonding are stable under rapid heating and cooling cycles.

Feature	Specification & Notes
Column Type	Fused silica capillary, polyimide coated
Film Thickness Range	0.10 µm to 0.20 µm
Inner Diameter (ID)	0.10 mm to 0.18 mm
Length Options	5 m, 10 m, 15 m, 20 m
Crosslinking	Fully bonded stationary phase for rapid ramp tolerance
Max Temp	Same as parent phase (up to 350 °C)
Deactivation	Ultra-inert treatment suitable for trace-level analysis
Efficiency	High (tens of thousands of plates, despite short length)
Compatibility	Standard GC and Fast GC systems; compatible with FID, MS, ECD
Sample Load	Moderate (optimized film to support trace and low-mid concentration analytes)

Important specs:

Efficiency: Even a 10 m × 0.10 mm column can have tens of thousands of plates due to very small diameter – enough to resolve simple mixtures. Fast columns sacrifice some resolution, but for targeted methods, they are tuned to separate key compounds sufficiently. Chrom Science & Technology provides guidance on which Fast column dimension to use to ensure critical pair separations are maintained.
Inertness & Load: The small size means sample capacity is lower. However, by using deactivated integrated guard segments or slightly thicker film than absolute minimum, CR Fast columns maintain reasonable sample loadability. E.g., a 0.10 mm ID with 0.1 µm film might only handle ~0.5 ng of a compound before overloading – fine for trace analysis, but maybe not for concentrated samples. So for moderate concentration quick analysis, one might use 0.18 mm ID with 0.4 µm film in 20 m. CR Fast offerings include those choices.
Instrument Compatibility: These columns fit standard GCs, but to truly realize their potential, a fast GC setup (with a faster oven or advanced controls) is often used. However, many modern GCs can handle Fast GC conditions in a limited capacity (like 40 °C/min ramps, using hydrogen carrier for higher velocities, etc.). Chrom Science & Technology likely provides recommended conditions for each CR Fast column.
Temperature Limits: Generally same as the base phase, but a short column can often be pushed slightly faster to max temp without issue. E.g., CR-5 Fast still has a max of ~340 °C, but since analyses may end earlier, actual usage might never need to hit that except for quick bake-out.

Typical & Advanced Applications

Fast GC is ideal for routine analyses where time per sample is critical, or for preliminary screening where some resolution can be traded for speed:

Environmental Screening

Labs processing many water or soil samples for volatile or semivolatile contaminants can use Fast GC columns to screen negative samples quickly.
For instance, a 10 m CR-624 Fast column could be used to run purge-and-trap volatile analyses in half the usual time; any hits can be confirmed with a longer column if needed.
Similarly, a Fast GC method for PCBs or pesticides can rapidly flag samples that need more detailed analysis.
This high-throughput triage approach can dramatically cut costs in large monitoring programs.

Petrochemical – PONA/DHA Fast:

While detailed hydrocarbon analysis (DHA) traditionally requires a very long run on a 100 m column, some refiners use a Fast GC approach for gasoline range: e.g., a 20 m CR-1 Fast with GCxGC or with an advanced detector to quickly profile hydrocarbon types.
Also, fast simulated distillation: using a short, high-temp CR-1 HT Fast column to get boiling point distribution in a few minutes (there are ASTM methods for fast simdist).

Manufacturing QA (Rapid Turnaround):

Industries like flavors/fragrances, solvents, or chemical manufacturing may use Fast GC for quick QC checks on batches. Example:
A beverage company might analyze spirit samples for key volatile congeners using a 10 m CR-Wax Fast column, getting results in 5 minutes to adjust processing on the fly. Or a chemical plant might have a fast GC monitoring a process stream for impurities continuously (online GC). CR Fast columns enable these rapid cycles with robust performance.

Emergency Response / Field GC:

In scenarios where time is critical (e.g., detecting chemical warfare agents or environmental pollutants in an emergency), Fast GC is valuable.
CR Fast columns in portable GCs can separate target compounds within seconds to a couple minutes, providing near-real-time data.
Their small size also fits well with compact GC instruments.

Routine Lab with High Sample Load:

Any high-throughput lab (contract testing labs, for instance) can benefit.
If a standard analysis that used to take 30 min can be done in 10 min with Fast GC, that’s 3x sample throughput. Provided the resolution is still acceptable, that’s a competitive edge.
CR Fast columns, combined with slightly modified method conditions, allow this acceleration.
We can highlight an example: One lab converted their 20-minute VOC method to a 8-minute method using a CR Fast column, maintaining >90% of original resolution and saving 4 hours on a 30-sample sequence. (If such anecdote exists, it would be compelling; otherwise, the general idea suffices.)

Performance Benefits

Benefit	Detail
Ultra-Fast Analysis	Cuts run times by 2–5× vs conventional columns, freeing GC capacity
Maintains Critical Resolution	Despite shorter length, narrow bore and optimized phase still resolve target peaks
Resource Efficiency	Saves carrier gas, electricity, and analyst time due to faster methods
Sharp Early Eluters	Early-eluting compounds show narrower peaks due to reduced diffusion
Lower Thermal Exposure	Less time at high temperature reduces risk of thermal degradation for labile compounds
Integrated Guard Options	Select models include built-in retention gaps for solvent focusing and improved ruggedness
Adaptable Across Chemistries	All CR phases available in Fast format – no need to learn new phase behavior
ROI for Labs	Higher sample throughput translates to lower cost per sample and faster TAT for service labs
Compatible with Most GCs	Works with standard instruments; even higher performance on true Fast GC platforms
Competitive Differentiation	Enables labs to advertise "ultra-fast GC" capabilities to their clients and internal stakeholders

The benefit is clear: significant time savings. By using CR Fast columns, labs can drastically reduce analysis time – freeing up instrument time, reducing backlogs, and even saving carrier gas and electricity (shorter runs mean less resource use per sample). The scientific challenge of Fast GC is maintaining resolution; CR Fast columns are optimized to mitigate that. So the message is you get nearly the same quality of data in a fraction of the time. In some cases, Fast GC can even improve data quality; for example, very fast analysis can reduce peak broadening from diffusion, leading to sharper peaks for early eluters. Also, less time at high temperature means potentially less thermal degradation of temperature-sensitive analytes, which can be a hidden benefit (e.g., some pesticides might degrade if held too long at 300 °C in a slow method, whereas in a fast method they elute quickly and are done).

Marketing/sales angle: Throughput = Profit. A lab that triples its throughput can take on more samples or reduce per-sample cost. So investing in a CR Fast column (and maybe some method development effort) has a tangible ROI. This is a strong persuasive point for lab managers. We can emphasize ease of adoption: “All our stationary phases are available for FAST-GC – it’s not a new technique, just a smarter use of what you already know.” All phases can be fast GC reassures that you don’t need special compounds or equipment beyond minor GC parameter tweaks.

Finally, using CR Fast columns can be a competitive advantage for service labs: faster turnaround to clients. It’s a selling point they can advertise – and we can subtly hint that by using CR Fast, you can advertise it too (“Now offering 5-minute GC analyses!”). So the benefit extends beyond the lab to their customers.

Industry Compliance & Standards

There aren’t many standardized methods that explicitly call for “Fast GC” because official methods assume conventional columns, but regulatory bodies do allow labs to modify methods for faster analysis as long as equivalency is demonstrated. CR Fast columns thus are positioned as enablers for labs to comply with throughput requirements or internal KPIs while still meeting method criteria. For instance, a Fast GC column can meet all identification and separation criteria of EPA 8270 (just in less time) – a lab would validate it and then be in compliance. The published ASTM methods for Fast GC (like some in fuels analysis) can be cited; CR Fast columns are fully capable of fulfilling those. Also, for pharmaceuticals, some USP methods have begun to embrace faster GC (especially residual solvent analysis with shorter columns when using headspace). CR Fast can be applied there but usually requires in-house validation.

One could mention that Fast GC is recommended in some EPA guidances as a way to increase productivity (with adequate calibration and QC). So adopting CR Fast columns can be done under EPA’s allowed modifications clause (this assures regulatory compliance). Ultimately, while not specifically mandated by standards, CR Fast columns help labs deliver results within tight timelines or high sample mandates without falling out of compliance – an increasingly important aspect as labs are expected to do more with less time.