Resistor Values

If i don't have exactly the right resistor, say 2.2M and I'm going to sub in a different but close value (or maybe 2 in series) is it better to be a little high or a little low?

Whether high or low? - It very much depends on the application

2.2 Meg is a very high value, and as such probably makes little odds being exact.

Fixed resistor value is always a compromise because we are stuck with the preferred series.
2.2Meg = 1.0Meg + 1.2Meg

Whether high or low? - It very much depends on the application

2.2 Meg is a very high value, and as such probably makes little odds being exact.

Fixed resistor value is always a compromise because we are stuck with the preferred series.
2.2Meg = 1.0Meg + 1.2Meg

thanks, i think i'm going to be a little low in all the cases where i'm off in the project, if it sounds like crap then i'll know where to start looking

The reason for the odd resistor values (E6 series,E12 series,E24 series) is that you should be able to pick a resistor in the E12 series for example that doesn´t differ from the desired value more than 10%.In the E24 series it is 5%.

A box of many, many E6 or E3 complete series selection 1/8W are only a couple of quid.

A box of many, many E6 or E3 complete series selection 1/8W are only a couple of quid.

the electronic stores around here only seem to carry "random assortments" not completes series, though i think i will look harder or try ebay, i've bought so many packs of 5-10 of odd stuff though now i probably have pretty much everything.