A/S Isomer Ketamine Appearance?

[Bassic]

SWIM Recently got a gram of ketamine off of his dealer. The gram came in two half gram wraps. One of the wraps was the usual stuff shiney and crystalline. It got SWIM pretty monged as he's come to expect from most UK Ketamine. The second was a sort of fluffy white powder, it felt more psychaedelic to SWIM and not so heavy. Is it possible that the second wrap was S Isomer? Or do you think it was just badly cut therefore SWIM experienced less of a body load?

[Psych0naut]

Both isomers look the same, though are indeed different in it's effects. SWIM always gets his ketamine from ketanest bottles, which is pure s-ketamine.
He boils it down himself and he has had two different strengths, 5mg/ml and 25mg/ml. When SWIM boiled down the liquid in the 5mg/ml bottles all the powder that was left was very fluffy too, and the amount of powder weighed much more than it contained in mg's of ketamine. After reading on the internet what the 5mg/ml bottles contained as other ingredients he found it contained benzethonium chloride, a preservative. Maybe SWIY's fluffy ketamine came from ketanest bottles?