add to that: any rapid temperature changes, and I will sleep more easily.
Some pesticide-type chemicals when mixed together will get really hot or
really cold to the touch. These are signs that the chemicals are not
compatible and should not be mixed together. they may be nullifying each
other or producing a frightening synergistic effect.

and chuckling quietly to myself and speaking now as a noncorporeal space
alien new to the organic chemistry of your planet lets play "Reductio ad
absurdum":

Some chemicals, but not many, may explode or burst into flame. These are
signs that the chemicals are not compatible and should not be mixed
together.

Also when mixing unknown chemicals, take note of the relative conscious
state of non-target organisms in the area where mixing occurs. If you
notice any convulsion or rapid loss of consciousness, this is a sign that
the two chemicals may not be compatible. In most cases the organism (doing
the mixing of the two chemicals), it's friends, offspring or pets are
*non-target organisms*. :-D

.....but that probably goes without saying. On the other hand if you have to
ask if it's safe to mix two unknown chemicals together maybe you do need to
be warned.... ;-0


"Kenni Judd" wrote in message
...
Mixing: there is a test that works "most of the time." No guarantees,
and YMMV. But if you mix up a very small test quantity of the two
chemicals, let the mix rest overnight, and it's still mixed rather than
separated, and not turned to mud, or turned some outrageous color by
morning, it has a good chance of being OK to spray. Next step would be to
use the test batch on a couple of test plants ... Kenni
"Jerry Hoffmeister" wrote in message
. ..
Hi everyone... Does anyone know can I tank mix Phyton 27 and Physan and
spray them together in general on orchids? And does anyone know of a
website that might list this sort of data?

Thanks!
Jerry