I have found that the GBL from the 2 suppliers tastes quite different even though they have the same effect.
I've always used the same supplier and it's tasted the same for years until the last batch which tastes very different. The original stuff tastes like liquid paraffin, the new stuff is quite fruity in a rancid sort of way. As you say, they have the same effect.
I got this batch last week and opened it, there were (and still are) little bits sitting at the bottom of the bottle.
I've had bits in the bottom of mine.
How much do you all usually take and what's your usual consumption process?
First dose = 2.3ml in about 60ml of water followed by 1.5ml every 90 mins going down to 1ml every hour. Continue for 12-40 hours then stop. No more than one session a week
