|My Studio Pastel Sets|
Whenever I purchase a new pastel stick I immediately decide what hue it falls into then test it against the others in that set until I figure out it's value by making a wide swatch with the side of a known value then dragging the new one through it. If I can't see the edges when I squint the value is close... (Sometimes I also use red lens sunglasses to check for value differences.) Once I have decided on the new stick's value, I label it with its product # and value on a 1/2 " white label which I wrap around one end of the stick. When a pastel gets used down to that label, I know it is time to order another of that product#, before I move the remainder into the broken pile.
It took me a long time to get this organized but the effort has paid off over and over again in terms of being able to quickly find the hue and value I need.