Got my new all in one meter and I'm not a chemist!

So to calibrate the ph it asks for ph6.86, ph4.0, ph9.18 solution. The only solutions I can find are 4, 7, 10 will this be acceptable or do I need the specific? Then to calibrate the ppm and ec and so on it calls for 12.88ec solution and 1.41ec will this need to be specific too or what?

What brand is you meter, those are some odd calibration numbers.

Pht-026 is the meter I got off ebay. Its made in china so go figure but the calibration solution is not common so will the more common ones that are close to the values it calls for work?

Yes , just calibrate it with whatever calibration solution u got. I use 4.0 & 7.0

I would think so, ph is ph and you should be able to calibrate to common settings, I would think the same with ec or ppm's.