Ok guys. Labmax refill arrived today. So I have tested the finished oil. Vial A and B colour changed instantly. And match 100% with labmax colour chart for Mast E. Used the blue light for vial B. Had a golden/yellow glow. Very happy with results. Pictures below.
* picture doesn't do the gold/yellow justice. Had to take pic in my darkened front room. What do you guys reckon?
* picture doesn't do the gold/yellow justice. Had to take pic in my darkened front room. What do you guys reckon?