Glycol for humidity

[±0.03 PPM Drifter]

Has anyone used this as a substitute for salts?(not sure exactly what type of Glycol). I was told its really good, and has good results in humidity chambers for calibration. I had a referance to it from my boss and he said its listed on NIST. Can anyone tell me what type it is, and is it available for purchase? 

I can't figure this one out yet. I feel dumb for posting a question like this. But I did some searches on the web and most Glycol related products are antifreeze and fluids for temperature baths. Maybe some of you calibration guru's may have some better knowledge.
Thanks if anyone knows, and and tell me.

[flew-da-coup]

I have only used Salt Solutions in the past. I wouldn't know. I have been using a Thunder Scientific 2500's for the past eight years. I figured all labs that are calibrating Humidity were using chambers these days. 

[MIRCS]

I have only used Salt Solutions in the past. I wouldn't know. I have been using a Thunder Scientific 2500's for the past eight years. I figured all labs that are calibrating Humidity were using chambers these days. 

The 2500 is using ethylene glycol

[flew-da-coup]

I have only used Salt Solutions in the past. I wouldn't know. I have been using a Thunder Scientific 2500's for the past eight years. I figured all labs that are calibrating Humidity were using chambers these days. 

The 2500 is using ethylene glycol

Oh God, Your right. What in the world am I thinking. I guess I wasn't>>>

[OlDave]

I have only used Salt Solutions in the past. I wouldn't know. I have been using a Thunder Scientific 2500's for the past eight years. I figured all labs that are calibrating Humidity were using chambers these days. 

The 2500 is using ethylene glycol

Oh God, Your right. What in the world am I thinking. I guess I wasn't>>>

Actually the current models ship with propylene glycol. I hear that improves the uncertainty by a factor of 1.

[±0.03 PPM Drifter]

We are in the Dark ages with Humidity. As soon as the company feels like its able to generate money in humidity cals to pay for a better standard like the Thunder Scientific 2500, I'm stuck with buiding my own chambers and a Vaisala probe.  

I can't complain though, I use the best equipment for standards lab
cals. Temperature and humidity is really a pain without the right
standards and whatnot. Thanks for the info everyone.