Recent content by _maxim_

Thank you Tom, but I think it is really too expensive for that purpose...

It is mainly an aqueos solution... so the viscosity should be comparable with the water... Nice idea! I guess it could be a pain to find a new floppy disk driver in the 2023 :cool: I have to see in my ceiling... but, exactly: which part did you have in mind? Head motor + movement screw? If...

Yes, exactly!

Thank you Lnewqban, Just give to me a time to make a diagram of the system with dimensions and I will post it here. The operation is once per time, maybe one or anyway a few per day. The syringe (or a similar container) must be easily replaced after the use with a new charged one, as a...

I did not find any spare parts in the market. Do you have a link to share?

Here: I had in mind a system similar to this but on a smaller scale, for example suitable for a 2ml commercial micro syringe without a needle: The piston could be a part of the "cap" of the glass flask, while the syringe must be a disposable component, easily to replace.

Thanks Baluncore. The problems I see in using a peristaltic pump are: - the size (as I wrote, it must be quite small and comparable with the volume of injected reagent, 1-2 ml therefore about 1-2 cm3) - the power supply requirements, being powered by small rechargeable batteries and not by...

Do you have a link to share? I have the impression that are quite expansive devices...

What about something like that, but even smaller?

Thank you Malapine, the idea was to use not-pressurized and cheap container as vials or eppendorf-like, as in use in chemistry Labs. Did you have some specific device in mind?

Thank you Bal, I've thought.. but all the mini peristaltic pumps I've found in the market are quite cumbersome to integrate or ratherly expansive. I was thinking of a simple piston system to replicate the function of a simple syringe, but if you have a ready-made solution in mind and can share...

Dear, I would like to create a controlled system to inject 1-2 ml of liquid (a chemical reagent) into a solution contained in a glass flask. The only request made is to use a reliable linear piston of minimum size, equal to or slightly larger than the injected volume (1 cm3) so that it can...

Thank you very much for the skills you make available to others. I will follow your advice developing the circuit around the cardboard as soon as I have studied its operation. You guys are really great, Baluncore and DaveE, thanks again.

What about using a common OPT101 on-chip transimpedance amplifier photodiode? Probably a 600nm bandpassfilter like this could help to select the wanted radiation

At least you managed to retire, even earlier. I don't even know if I'll ever go there, there are still 15 years left and everything is so smoky it's scary... That's why I try to keep my mind busy with projects that can give me at least some stimuli, as the rest of the work is calibration...