Hi all Checked Lactobacillus plates Two do not…

Hi all,
Checked Lactobacillus plates, Two do not look like the other three, after Gram staining a sample colony from all the plates, two had Gram positve small cocci. The other three showed long rod shaped gram negative chains, ths was more like what i expected to find. To be sure, i restreaked these onto M17agar with added Lactose and incubated them overnight at 37C. In preparation for tomorrows PCR tests i made up the solutions needed, working out quantities of HCl and Tris-HCl in 200mM. Microbiology is fun but maths makes my head hurt!!! big thanks to nicola for her little equation, i now can work molar solutions out but i think more practice is definately needed