Monthly Archives: October 2013


October 28, 2013

No samples today… Cleaning the columns… Boring. Maybe I will be Keratin for Halloween: fur coat, long hair, woolen gloves…


October 23, 2013

Running 4 samples and 4 blanks for Juan this afternoon (overnight), then cleaning before the 4 IP samples for Donna. John’s set will be next.


October 18, 2013

Orbi will be busy the next 3-4 days running two in-solution digests (8-hours each) for Tugba and Tania followed by 6 samples for John. More samples are coming later today!


October 17, 2013

Yesterday, Orbi quit mid-run, so the queue is now 1 day behind. Samples are running: fingers crossed! If the problem persists, Orbi will be down for 2 days.


October 15, 2013

Orbi is running 2 in-gel digested samples for Juan and 5 in-gel digested samples for Tania (yep, that’s me). Tugba’s sample is next…


October 10, 2013

Today is a gel day: running a couple of gels for myself and a customer and some in-gel digestions. Orbi will be running a TMT 2-plex sample in triplicate for Brian today (for 24 hours).


October 8, 2013

This morning, tuning and calibrating Orbi for the intact protein analysis (for Tyler and Edward). After that, back to nano-LC: 4 samples for Yaqi.


October 7, 2013

Cleaning and troubleshooting Orbi today. Filtering your samples is an easy way to get your samples analyzed without a delay.


October 4, 2013

Setting up 4 TMT-labeled samples in triplicate. Orbi will be working this weekend. ETA: B. Cereus TMT-labeled samples are running, 230 min/sample.

1D and 2D PAGE equipment and supplies

I get a lot of inquiries about our PAGE (polyacrylamide gel electrophoresis) equipment, so here are some information on the equipment we have and the supplies we use.

Cost: It’s free!

We share our PAGE equipment with you at no charge. You need to purchase your own supplies: e.g. gels, standards, buffers, and other consumables. Sometimes we have supplies left over from the Facility experiments, which we will gladly share with you as well. Please, ask before you buy your own!


Power supply

Our power supply is a basic model; it does not store programmed methods. It can run up to 4 cells simultaneously, as long as the conditions are the same.

Electrophoresis cells

We have three Bio-Rad electrophoresis cells, a Mini-PROTEAN Tetra for up to 4 mini-gels (8.6 x 6.7 cm), a Criterion cell for up to 2 midi-gels (13.3 x 8.7 cm), and a Criterion Dodeca cell for up to 12 midi-gels. We also have a blotter for 13.3 x 8.7 cm gels.

2D PAGE, first dimension (isoelectric focusing, IEF)

Our PROTEAN IEF cell (Bio-Rad) is capable of storing methods, and accepts 7 cm, 11 cm, and 18 cm focusing trays. We also have rehydration trays for all three IPG (immobilized pH gradient) strip lengths.

Gel casting equipment

You can use our gel casting stands and glass plates (0.75 mm) to cast your own mini-gels. In my experience, 1-mm thick gels hold up much better, especially for low %T (4-10%). Bring your own plates if you wish!


The Pierce precast mini gels from Fisher are compatible with the Bio-Rad Mini-PROTEAN cell. We do not buy precast gels from Bio-Rad due to the high shipping costs. Fisher orders ship free. You can learn more here.

Immobilized pH gradient (IPG) strips are also available from Fisher (GE Healthcare Immobiline DryStrip gels, for example). The prices are comparable with the Bio-Rad’s, and the shipping is free.

05/28/2014 ETA: According to the GE Healthcare website, Immobiline IPG strips and buffers are not compatible with the Bio-Rad IEF cell running conditions. I am not familiar with the GE system and cannot tell you whether this is true; so to be safe, please use Bio-Rad IPG strips and buffers. If anyone has successfully run Immobiline strips on Bio-Rad IEF cell, please share with us! This information could save your colleagues both time and money!

Disclaimer: We do not receive any form of compensation for promoting any brand or a particular distributor.

Still have questions? Let’s meet and talk about your project!