For my low budget, I need to have low cost instruments but do not want to compromise quality research. I wish to have the names of companies with addresses and contact details.
Hello Arvinder,
For PCR please consider openPCR http://openpcr.org/, the shipping costs are relatively cheap.
For gel documentation tasks, you can make your own device or ask to a electrical technician that build one for you, works pretty similar to expensive gel doc systems http://www.labtimes.org/labtimes/issues/lt2011/lt02/lt_2011_02_64_65.pdf. or buy a DarkReader http://www.clarechemical.com/transilluminator.htm
We buy a small non-refrigerated Sigmazentrifuguen http://www.sigma-zentrifugen.de/index.php?id=109 for only US 2500 for DNA extraction from insects (phlebotomine sandflies). A whole lab can cost about US 8.000.
I hope the answer can help you, Luís Enrique.