OK, for 10% concentration (100mg/ml) and you do not need any solvent, so forget the olive oil. Olive oil is used only for 20% concentration.. so first of all, i would start out with a smaller batch - I would shoot for a 60ml batch. Weigh out 6g of test base powder. Triturate it with a mortar and pestle to be sure that you have the finest particle size.. no granules or clumps.
Now weigh out 54g pf PJU. This will end up being slightly more than 54ml, however, you lose some int he process. In fact, I personally use 10% more of my powder and PJU as some gets lost int he process, but that's just me.
Next you'll apply geometric dilution process. Take about 1/5 of the total PJU you weighed out and add it to the powder int he mortar. Blend this with the powder thoroughly - you can use the pestle or a small rubber spatula like the ones used for spreading icing on cake - the narrowest one. Once this is completely blended, add 1/3 of the balance of PJU and blend some more, then 1/2 of the balance, and the finally the balance. Each time you add more PJU you blend the batch.
Once this is completed, you place it in your dispenser - i.e. 60ml syringe will work best for this viscosity.