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4–15% Criterion™ TGX™ Precast Midi Protein Gel, 12+2 well, 45 µl

Pkg of 1, 4–15% precast polyacrylamide gel, 12+2-well, 45 µl, for use with Criterion and Criterion™ Dodeca™ cells

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Average Rating 4.5

|10Scientists have reviewed this product

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Average Rating 5.0

Wonderful and beneficial in laboratory analysis in research.

Review Date: 27 Sept 2023 | Bio-Rad

Painfully awful gels.


Average Rating 2.3

Application Area:

SDS-PAGE, blotting

Gels stick to membrane after transfer. Bio-Rad know that they are faulty (people from a different institute got replacements). After several emails they sent replacements and they are still faulty. Can't get clear blots from these horrible gels. Switching to Invitrogen.

Review Date: 18 Jun 2021 | Bio-Rad

Great bands using these gels


Average Rating 5.0

Application Area:

Western Blots

Great product! Easy to use and the blots are just beautiful. I got the nicest bands with these gels.

Review Date: 25 Sept 2018 | Bio-Rad

Very reliable product and easy to use.


Average Rating 4.7

Application Area:

Analyse proteins in bacterial lysates

We have been ordering these precast gels for over 5 years in our lab as they save us a bit of time compared to making our own gels. Also, because the outer plates are disposable, we don't have to worry about risking breaking them, as with lab made gels which have fragile plates. There are cheaper precast gels out there but we have had the best results with these gels.

Review Date: 27 Jun 2018 | Bio-Rad

These gels are consistent, produce great bands and are easy to use.


Average Rating 5.0

Application Area:

Protein changes

I have used these gels for over 15 years & recommend for any western blot. High quality, reproducible results and easy to use.

Review Date: 9 Apr 2018 | Bio-Rad

Can't live without it.


Average Rating 4.3

Application Area:

Western blots of various cancer cell line lysates

Really easy to use. These gels are nice because the lane for the ladder is small but the wells hold 45uL as opposed to 30uL so that if you need to load more lysate than normal or the lysate is dilute. We also use the Trans-Blot Turbo Transfer System. The transfer pads are a bit expensive but we are thinking about utilizing other transfer stacks to become more economical.

Review Date: 28 Jul 2016 | Bio-Rad

Awesome gels


Average Rating 5.0

Application Area:

Western blots

These gels allows high reproducibility of results and beautiful outcome of the WB

Review Date: 24 Feb 2016 | Bio-Rad

I would not use any other manufacturer's gels


Average Rating 4.0

Application Area:

Analysis of proteins separated on 1D and 2D PAGE

Highest band resolution and reproducible results, particularly for 2D gels that must be reliable quantitative.

Review Date: 27 Nov 2015 | Bio-Rad

Average Rating 4.7

Application Area:

analyze for proteins

Easy to use, less time consuming and affordable price.

Review Date: 16 Oct 2015 | Bio-Rad

Average Rating 5.0

Application Area:

for western blotting

Results quality is better. Separation is very good. Blots are super clean. Price are reasonable

Review Date: 27 Apr 2015 | Bio-Rad

Use Criterion TGX Precast Protein Gels for the separation of polypeptides from ~4–300 kD. The novel formulation TGX (Tris-Glycine eXtended) Gels have a long shelf life and can be used for either denaturing SDS protein separations or native electrophoresis.

Bio-Rad offers a wide range of Criterion TGX Precast Protein Gels, including other 26-well gels in both single percentages and gradients.

Run 1–2 midi gels in 35 minutes using the Criterion Cell. For higher throughput, the Criterion Dodeca Cell can run up to 12 gels.

Features and Benefits

  • Can be used for denaturing electrophoresis with standard running buffer containing SDS
  • Laemmli-like separation in the presence of SDS
  • Run time as short as 20 min
  • Proteins retain native conformation and activity in the absence SDS
  • 12 month shelf life

Related Products

For faster gel and western blotting analyses, use Criterion™ TGX Stain-Free™ Precast Protein Gels.

  • 10x Tris/Glycine/SDS Running Buffer (1610732)
  • 10x Tris/Glycine Running Buffer (1610734)
  • 2x Laemmli Sample Buffer (1610737)
  • Native Sample Buffer (1610738)
  • Protein Ladders and Standards (Markers) including unstained, prestained and western

Supporting Documents

Criterion Precast Gels Application Guide, Instruction Manual

Product Overview