if there is indeed a patent issued for this it must include a working example which would have the formulation. this may not be the formulation that had been marketed but has to be one that in the inventors eyes works. they also have to included data and argument why this should work. it doesn't have to be real though.

Chem-Cast is based on U.S. Patent # 4,356,189, which was issued on October 26, 1982 to Drs. Charles Stagg and Ronald Tribble. In the patent application they state that they successfully used the material on dogs, cats, cattle, and pigs, though with greatest success on dogs and cattle. They experimented also with horses, but only 9 of the 49 stallions it was tested on were successfully castrated. They postulate that the method would be successful on sheep and goats as well, with the pendulous scrotum being the critical factor.

The patent application itself only details their experiments on dogs and cattle. They specify use of U.S.P. (or better) grade lactic acid or a mixture of lactic acid and lactic acid lactate equivalent to a total of not less than 85% or more than 90% by weight equivalent of lactic acid. They experiemented with various concentrations of lactic acid and various amounts injected. There are tables showing the results of these experiments by species and size of animal.

Injection directly into the testicles resulted in atrophy of the testicles.

The entire 20 page patent is on-line at the U.S. Patent Office web site (patft.uspto.gov) and should be CAREFULLY read for the details. It’s written in a strange hybrid of medical and legal jargon, but all the critical details are covered.

i read the patent mentioned. it states that many weak acids or bases with do the castrations but preferred is lactic acid. the latter is a natural body constituent and should have little lasting effects. the preferred concentration is 85% aqueous soln of usp pure d,l lactic acid. with bulls injection into both cords and testis preferred. in dog injections into the cords only - less tissue to be necrotised. if injected into epidymous (sp) - animal becomes sterile but not castrated. the patent is real and apparently it does work. i gather it takes awhile before the testes atrophy. i gather it cuts off the blood supply to the testes by injury of the acid.

I saw in one of the studies (not patent) that the amount recommended was 1cc per 100lbs of body weight.

Well it looks like a fairly good method of castration. It is only a matter of time before someone here tries it. But still be safe people!

SplitDick (imported) wrote: Mon Mar 04, 2002 10:47 am I saw in one of the studies (not patent) that the amount recommended was 1cc per 100lbs of body weight.

Well it looks like a fairly good method of castration. It is only a matter of time before someone here tries it. But still be safe people!

was that injection into the testicle or the cord? i wonder how much pain is produced and how long for atrophy. i gather any method that cuts the blood supply off to the testicles for a period of time (wonder how long) will kill the organ. wonder if the lactic acid injection causes a lot of inflammation and swelling. apparently is does work.

Inphx,

If you look at the second post on this thread, by splitdick, it says that the testicles swell for about 2 weeks. However, it does not actually say by how much.

LOL

Inphx,

colin (imported) wrote: Mon Mar 04, 2002 1:40 pm If you look at the second post on this thread, by splitdick, it says that the testicles swell for about 2 weeks. However, it does not actually say by how much.

yes his post did say that. not surprising with swelling. it would appear that this injection is not that unlike being clamped with a burdizzo. sudden trauma stopping the blood supply and causing inflammation. wonder if it is less painful than getting clamped. would assume so.

I don't know for sure how it works, but my theory is that the acid simply damages the tissue of the testicle and/or spermatic cord. Any acid would do, but lactic acid is safest because it is natural and already present in the body -- something like battery acid could get into your system and kill you.

I would expect anything that destroys testicle tissue will cause pain, although the people using Chem-Cast on cattle believed it to be painless (or relatively so compared to burdizzos, etc.). It is possible this is true because lactic acid is what the body uses to dull the pain of muscle soreness. So it may have a nerve-deadening effect.

This is all speculation on my part, but seems reasonable.

SplitDick (imported) wrote: Mon Mar 04, 2002 3:15 pm I don't know for sure how it works, but my theory is that the acid simply damages the tissue of the testicle and/or spermatic cord. Any acid would do, but lactic acid is safest because it is natural and already present in the body -- something like battery acid could get into your system and kill you.

No, any acid will not do. You mentioned battery acid, which is sulfuric acid. Along with such mineral acids as hydrochloric & nitric, this acid is VERY caustic & toxic. If anyone would like to try other acids, try the organic ones, although boric acid, which is used as an eyewash, might work. At least it isn't toxic.