Canadian vaper since 2011.
Mixologist since 2012, Equipment sources:
500gm X 0.01gm scales, calibration weights, 10ml class A graduated cylinder, plastic dropper bottles are from e-Bay
I'm in Canada so I bought liquids from Canadian sources to avoid the high cost of cross-border shipping:
PG, VG, & flavours are from diy-ejuice
48mg/ml VG nicotine base is from allecigsolutions, also available from gentlemensreserve
allecigsolutions also has a nicotine test kit, and concentrated flavours
oral syringes (1, 3, 10, 60ml) can be bought at local pharmacies in Canada for less than the on-line cost
glass vials for 1ml test batches are from Dollarama
nitrile gloves were purchased from Princess Auto
Plano ammunition boxes (shotgun shell size) were bought at Walmart (air-tight, keeps the odour from concentrates contained)
I mix by weight, not volume, as I find it more accurate.