Perhaps more cost effective would be to use the chromatic agar strips, and they have been tried and tested by yourself.
You can try buying some "Brilliance UTI" chromogenic agar plates.
Fisher Scientific sell them, and Fisher say you can buy these without opening an account, by checking out as a guest (only businesses can open accounts, but checking out as a guest is fine for individuals).
These plates have to be stored in the fridge, and have a shelf life of only 6 weeks. They have to be shipped cold, so they will arrive in an expanded polystyrene box containing freezer blocks.
Also available from
Scientific Laboratory Supplies. They only sell to companies, but I made up a company name and department, and fortunately they did not check.
Some other chromogenic agar suppliers in
this post.
Chromogenic agar typically provides a partial identification; it often will not tell you the exact species of bacteria, but narrows it down a bit.
For example, one of my urine bacteria was identified as "coliform bacteria" by chromogenic agar
instructions, and coliforms are a group which includes Escherichia, Klebsiella, Enterobacter, Citrobacter and Hafnia. I did not know which I had, until I sent my bacteria to the Markov Clinic, and the clinic told me I have Klebsiella pneumonia. So that narrowed it down to the exact species of coliform bacteria.
Hmm, maybe i could try just drooling onto it
To obtain nasal mucus, you would want to blow your nose into a tissue, then take a sample of that mucus using a sterile cotton swab and place on your agar. Or if you have post-nasal drip, you might want to cough up some of the mucus which is dripping down the back of your throat, especially in the morning, when there may be more of it.
You can also use a sewing needle as a sterile transfer tool: if you hold the needle in a gas stove flame for a few seconds until it is red hot, that sterilizes the needle.