 diagram right where someone had a mix and they put this in and we're going to take from this one mill from here and we're going to get nine mills of water it's going to be our D where to the loop this and so our volume in this instance is going to be 10 mills total. Now nothing hard about that pretty straightforward but how do folks describe it and on that lab we have a multitude of what some folks might say one mill to ten mills right then looking at this in terms of what the total is one mill out of the total so one mill is taken up to ten mills they're saying that the final is going to be ten right and you know another person might say one to nine right because that's what up here we got one mill and nine mills so they're looking at the part one plus nine okay so two people having this one situation differently another way would be one in ten right there again they're looking at the total one into a total of ten all right you may see this colon symbol so they may say this is a one to ten delusion right same thing they're saying once again the total one they look at the colon again as so they're thinking one of ten another person using colon nomenclature they look at it one plus nine right of course they're looking at the parts the person said one colon ten and this is these colon are fairly common ways of discussing that so you have to be careful another in one we're going to be using principle is this where we say a one-tenth delusion so and again is an asset same one of ten but that are starting material the one mill is a tenth of the total volume right so there in our one mill is a tenth of the total volume so there again that's looking at another will be ten fold right ten fold that means that this final ten mills is ten times the what you're deluding right so the ten mills is ten times the one mill right so we say that's a ten fold or other thing they call that a ten X for the same reason it's ten times deluded so it's now essentially one tenth right what it's starting concentration was because we now have a ten fold it will a ten fold increase or a ten acts final volume so you know it's you know you pay attention to what instructions are saying so that you know what we'll be using in our labs typically would be if we were saying in this case one part start for one mill a start to nine mills of water right so we're going to say one mill okay okay of the ten mills right being the total volume is one tenth now when we see this coloring symbol we're going to use it as the one plus nine right so we say one part of our start plus nine parts the what we'll call this the deluent right we saw that that we're adding in this case water we refer to as the deluent right and so that so often we see these parts in multiple configurations so we might have one part the part the four parts so we may actually have solutions that have multiple components so there would be one part now in terms of delusions right this is this is a term that we need solutions but it's still part one plus three plus four so when we see the colon in our lab we're going to treat it as a one plus nine and we're going to talk about our delusions in typically one-tenth type fractional thing or may say tenfold and we'll talk about the use of tenfold and just a minute we talk about different types of delusions so let's let's talk about that let's talk about different types of delusions