Hi @DkFran,
I haven't used the Cheapstat for lead metal measurements. Perhaps someone here will be able to answer that part of your question.
However, I have used the Rodeostat with square wave anodic stripping voltammetry. I have written two blog posts which describe these experiments:

• Bismuth modified carbon paste electrode for metal measurements
• Square wave anodic stripping voltammetry and metal testing

Yes, the XL transilluminator does fit inside the imaging enclosure. It is a snug fit, but it works. Unlike the Small, Midi and Large transilluminator, you do have to take the door off in order to take the transilluminator in/out of the enclosure. But if you are planning on keeping it in there most of the time this shouldn't be an issue I would think.
There is an adapter we ship with the XL version, which is not a frame but a base plate for the transilluminator to sit on.
I have added the Extra Large XL option to the product page now, so you should be able to select it.

The colorimeter kits will be back in stock the first week of June.
Hope this helps. Let us know if you have any other questions.
Thanks !

We are currently out of Cheapstat stock and at this time we don't have plans to restock in the forseeable future. However, if you want to make one yourself, we do still have the bare Cheapstat PCB for sale here. We have also just updated the Cheapstat documentation to include the bill of materials for this board. Let me know if you have any questions about this.
Going forward we will be focusing most of our efforts on the Rodeostat open source potentiostat. If you are interested in using the Rodeostat or have any questions, please let us know and we will be happy to help.
Best,
Jo

@zahidshar
We are currently out of Cheapstat stock and at this time we don't have plans to restock in the forseeable future. However, if you want to make one yourself, we do still have the bare Cheapstat PCB for sale here. We are working on updating the Cheapstat documentation to include the bill of materials for this board, so that should be on the site very soon. Let me know if you have any questions about this.

Going forward we will be focusing most of our efforts on the Rodeostat open source potentiostat. If you are interested in using the Rodeostat or have any questions, please let us know and we will be happy to help !

@gbathree Thank you for sharing this information about the applications for the GOSH meeting this year. I wish we could attend ! We will be sure to forward this post to our social media and relevant groups/individuals.

So, for the diffuser we used Solacryl, which is a clear UV-transmissive acrylic (1/8" thick). We then use a hand-held sander to sand both sides of the material. After sanding, give the materail a rinse in water and this makes a pretty good UV-transmissive diffuser.

You can search online for Solacryl material. In my experience it is not that expensive, but you will have to buy a sheet and cut it to the size you need. We have bought our Solacryl sheets from a company called Loop Acrylics in the US. You can contact them by email at acrylicsbyloop@gmail.com. I hope that helps !

@rtapilan

Thank you for your question. At this time we don't conduct teacher training workshops. However, we are always available to help and answer questions from individuals regarding using the colorimeter or any of our other products.

@brentmarble3

Hi, I read through your message and I'm wondering whether this is a general question about gel electrophoresis or whether you are having trouble with your electrophoresis equipment. Are you using our IO Rodeo gel box and electrophoresis power supply ? It doesn't seem from your message to be an equipment problem, but more a problem with a new loading dye that you are using ? If that is the case, you might be better off asking the manufacturer of the loading dye whether you should expect to see you DNA sample behave differently in their buffer. I'm sorry I haven't used the GoTaq loading dye.
I hope that helps. Good luck with your PCR experiments and let us know if you have any specific questions about our electrophoresis equipment.
Jo

Hi Greg,
Thank you for your kind words about our work and for reaching out ! We will definitely take a look at the openhardware.science website, thanks. Your work sounds very cool, and we would love to chat further. We sent you a message on here so look for that and hopefully we can connect and chat soon !
Best,
Jo