ive got a bottle of teste 250 and it had crystals in it, i heated it up and shot it, no prob. next shot a few more crystals, did same thing no prob. the crystals are getting thicker though. how hot can i get the solution before the test is destroyed or the bottle breaks? i use a 22g needle to draw. id like to avoid adding more oil in it for several reasons. im afraid im going to end up using all the oil and not getting all the test. any other simuliar expereinces?