Rethinking Precast Agarose Gels: Why Labs Are Choosing Biofargo Over E-Gel

This post takes an honest look at what matters most when selecting a precast gel system, and why Biofargo's AgaroPrep kit is increasingly the answer for labs that want performance, safety, and value without compromise.

The Hidden Costs of the E-Gel Ecosystem

ThermoFisher's E-Gel is a capable product. But the moment you look past the gel itself, costs start stacking up.

First, the E-Gel system requires ThermoFisher's proprietary E-Gel Power Snap electrophoresis unit. If your lab doesn't already own one, that's a capital expenditure before you run a single sample. If you already have standard gel chambers — and most labs do — they simply won't work with E-Gel cassettes.

Second, E-Gel sells you the gel. The DNA ladder, loading buffer, and running buffer are all separate purchases, separate SKUs, separate line items in your procurement system.

Biofargo's AgaroPrep takes a different approach. Each kit ships with 10 precast gels, your choice of DNA marker (from 8 available options covering 50 bp to 15 kb), 400 µL of loading buffer, and TAE instant granules — all included, all in one order. And it runs on the standard mini gel electrophoresis chambers your lab already owns.

The result: a meaningfully lower cost per experiment, and a dramatically simpler procurement process.

Sharper Bands. Cleaner Results.

Cost is one thing. Performance is another. So how does AgaroPrep actually compare at the bench?

Biofargo's gels are machine-manufactured under ISO 9001:2015 certified conditions, with consistent agarose distribution and GelRed® pre-incorporated at a precisely controlled concentration. The result is sharp, clean band separation with sensitivity down to low nanogram levels of DNA — without the band smearing or background signal that can plague hand-cast or inconsistently manufactured gels.

Works With What You Have

Compatibility is often an afterthought in gel purchasing decisions — until it isn't. AgaroPrep gels are designed to fit most standard mini gel electrophoresis chambers used in molecular biology labs worldwide. No adapter, no proprietary frame, no dedicated power supply. If your lab already runs agarose gels, AgaroPrep slots into your existing workflow on day one.

This universal compatibility matters especially for:

• 🔹 Core facilities managing equipment across multiple user groups
• 🔹 Teaching labs where standardization across benches is essential
• 🔹 CROs and contract labs procuring at scale across multiple sites
• 🔹 Labs transitioning away from hand-cast gels who don't want to invest in new hardware

More Formats. Custom When You Need It.

ThermoFisher's E-Gel lineup offers a defined set of formats optimized for specific applications. That works — until your workflow doesn't fit the available options.

AgaroPrep offers 28 variants as standard stock, covering well formats from 6 to 50 wells and agarose concentrations of 1.0%, 1.2%, 1.5%, and 2.0%. Need something outside that range? Custom concentrations from 0.75% to 2.5% are available on request, along with non-standard gel sizes. That flexibility matters for labs working with unusual fragment sizes, running high-well-count screens, or establishing new standardized protocols.

Built for Reproducibility and Auditability

For labs that need to document their results — GLP environments, regulated research facilities, CROs — traceability isn't optional. Every Biofargo production lot comes with a Certificate of Analysis, and machine manufacturing ensures lot-to-lot consistency that hand-cast or less rigorously controlled gels simply can't match.

The standardized protocol — 80V for 50 minutes — means your team runs the same experiment the same way every time, with results that hold up across batches.

A Direct Comparison