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Right, I was just explaining my motivations -- A pinch of reasonand a good handful of compulsiveness :)

I am a little perplexed by that. What is your understanding of the mechanism by which the NaCl ions would be transferred to the device? Also I do not believe that there would be any difference in the RH whether the saturated solution was slurry or a saturated solution that contained only a...

The accuracy is for preparing seeds for long term storage. Plusaccuracy is a personal preference.

Thanks for pointing out the Humidipaks. I will order several RH's immediately. What Hygrometer do you use? Thanks again.

Prepairing a saturated solution. Rinse a clean Pyrex cup with distilled water, then add ~4 Oz. of boiling hot distilled water to the cup. Stir in chemically pure salt until you can see an accumulation of undissolved crystals accumulating at the bottom of the cup. Continue stirring until you...

This post describes some basic features of solutions. More posts to come on creating the magic humidity jar.

Your point is well taken. I will take a more fine grained approach. In the next post I will give a detailed description of the preparation of a saturated solution and the magical humidity jar. Still I am loath to help those too slothful to help themselves and expect readers to look up...

There is no such ratio for a saturated solution. I am not going to define and elaborate elementary terms of chemistry in this thread and will expect readers to look up unfamiliar terms and phrases for themselves. If after doing that there are still problems of understanding I will try to help.

How about that, you were wondering LOL

At this point you are probably wondering how I know the RH inside that jar. Well, it's magic, which is to say it depends on matters of physical chemistry that I only vaguely remember studying. But the fact is that saturated solutions of various salts at a fixed temperature in a sealed volume...

Hygrometers are essential to anyquantitative approach to horticulture and especially to cannabis, its indoorproduction and related processes. They are, however, the leastaccurate of all the instruments that one is likely to encounter. Asimple mechanical instrument with a certified accuracy of...

Below a certain temperature THC degrades primarily by oxidation. Once the cannabis is dry enough not to support anaerobic bacterial growth, removing oxygen would eliminate that path of degradation without any problems that I have been able to document. I am still trying to determine if oxygen...

That is not necessarily true. It depends on the moisture content of the material during the anaerobic conditions. In the example you gave the conditions are high moisture and anaerobic. I am still researching the matter to find the lowerlimit of moisture content that will sustain anaerobic...

Typically oxygen absorbers are porous containers of fine iron powder suspended in a lite weight porous medium that allows air to circulate through the iron. Small amounts of salt (NaCL) are also included. As air passes over the iron the iron is converted to iron oxide (rust) and in that oxygen...

The rate of evaporation of water from a surface depends greatly on the the rate at which water molecules move away from the surface once they are free of it. The slower molecules are in moving away the higher the likely hood that a molecule first leaving the surface will strike one that has...

Right, I understand. I am trying to determine what chemical processes go on during curing and what environmental parameters they require. In that regard I am looking first for information on the role of oxygen. See the role of oxygen in curing (posted on this site) You will find in this...

I gather from the article that though ideal methods will vary from species to species and there are other uncrtainties the general recommendation is: 5C ~= 41 degrees F –18C ~= 0 degrees F Your home frig/freezer can be set to these temps. I will start today on developing a method for...

Crud! I thought I had this figured out. -- thanks finally got it, I hope. I will go back and check all my links – again! Edit: Looks like they are all good now. Please kick me in the butt if you see another such transgression. And thanks again for the help.

http://www.ars.usda.gov/is/AR/archive/sep98/seed0998.htm"]hxxp://www.ars.usda.gov/is/AR/archive/sep98/seed0998.htm

Yea. I thought I remembered Lowes selling a unit that had a diffuser open at the bottom, but rain blown up into it would surely break the envelope. So I'll chalk that up to faulty memory. The only cautions I have found from manufacturers is: This is for MH but I'd expect the envelopes to be...