the spec we can ensure as follows:

color value(E1cm 1% 460nm): 60min
gardenia glucoside A238nm/A440nm: 0.4max
gardenia phenol: A325nm/440nm: 0.5max
As mg/kg:1 max
Pb mg/kg:1 max
Hg mg/kg:0.1max

Package: normally, extract in 25kg per plastic barrel, outside packed
in carton; purified powder 20kg per plastic bag, outside packed in
carton. besides, all can be packed as buyer require.

Highly appreciate your reply for confirmation of your interest.