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Stevelele
03-01-2015, 01:26 PM
I have an ukulele and put two oasis humidifiers in my armitage case. The humidifiers have been placed by where the body joins with the fretboard. I put in a hydrometer, but I'm getting a reading of 28% humidity, even though my outside humidity is 40%. how is this possible and what am I doing wrong?

wayfarer75
03-01-2015, 01:38 PM
It's probably because your hygrometer is faulty or needs calibration. I have two Oasis humidifiers in each case (I have only two solid wood ukuleles) and get about 50%. I have cigar humidor digital hygrometers, and I have checked them against the big hygrometer in my bedroom; they are within 1% of each other. Also, I keep one Oasis in the uke's body and one by the neck. As long as they are filled, my ukes are fine.

By the way, humidity outdoors doesn't mean much unless all your windows are always open and you aren't running the heat or AC.

Stevelele
03-01-2015, 01:42 PM
I think I figured it out. I've been using regular water and I believe that the liner has been clogged by the mineral content. i wonder if there is a way to fix it or whether i have to get completely new ones


It's probably because your hygrometer is faulty or needs calibration. I have two Oasis humidifiers in each case (I have only two solid wood ukuleles) and get about 50%. I have cigar humidor digital hygrometers, and I have checked them against the one in my bedroom; they are within 1% of each other. Also, I keep one Oasis in the uke's body and one by the neck. As long as they are filled, my ukes are fine.

By the way, humidity outdoors doesn't mean much unless all your windows are always open and you aren't running the heat or AC.

wayfarer75
03-01-2015, 01:43 PM
If that's the case, you need new ones, I think.

Stevelele
03-01-2015, 01:49 PM
I also put a herco humidifier in the case and it is still at 25% I don't understand this


If that's the case, you need new ones, I think.

Doc_J
03-01-2015, 02:23 PM
In a pinch use a damp sponge in a baggie with holes. I use small medicine bottles with lots of small (3/32) holes and Water absorbing gell crystals used for cigar humidification.

Cfiimei
03-01-2015, 02:34 PM
Why worry? Willie Nelson doesn't worry about cracks... ;-P
76762

Stevelele
03-01-2015, 03:23 PM
so i made the mistake of using non distilled water in the humidifier. apparently that is the kiss of death, and I'm trying to rectify it. I bought a bunch of tic tac containers and poked holes in them, putting in a damp sponge

Cfiimei
03-01-2015, 03:35 PM
Is it possible to soak the humidifier in vinegar to purge the calcium deposits? Just a thought... Works with shower heads. All of my in-case humidifiers are homemade, so I'm not familiar with the purchased variety.

Stevelele
03-01-2015, 03:57 PM
that is a very clever idea. anyone have any thoughts about this? i guess i would be worried that the smell would transfer to the ukes. man, this stuff is driving me insane


Is it possible to soak the humidifier in vinegar to purge the calcium deposits? Just a thought... Works with shower heads. All of my in-case humidifiers are homemade, so I'm not familiar with the purchased variety.

Dan Uke
03-01-2015, 04:24 PM
If you need to refill the humifiers with water, they work whether you use regular to distiller water. maybe you need to Coolkayaker's technique and put your ukes in large Tupperware with sponge

Stevelele
03-01-2015, 04:32 PM
i realized that my hydrometers are reading things very inconsistently. i think i have to put this to bed for now.... thanks for all the ideas

Inksplosive AL
03-01-2015, 05:06 PM
I understand why distilled water only is added to refill the level of old school wet batteries. As one who owns and operates an autoclave I understand the why behind the need for distilled water where minerals are dangerous to the unit. The same holds true for any electric humidifier though I dont believe they can explode like an autoclave but this shouldn't mean anything to a sponge, moisture crystals or the hydrometer.

Recstar24
03-01-2015, 05:17 PM
I've messed with all sorts of different humidifier options, from those made for guitar and ukulele to those made for cigar humidors, and nothing has worked better for me than the DIY homemade kinds. I use a little plastic container filled with water storing crystals from Home Depot for my Mya moe case and it keeps it at an easy 45% RH, whereas the fancy cigar humidors that are supposed to maintain at 60% RH struggle at 40 and then quickly dry out.

I teach uke to junior high kids and we have 60 solid mahogany mainlands in my classroom. We have a room humidifier that works very hard to keep at 35% RH, but over the weekends and long breaks the ukes go in large plastic bins about 8 each and man those water storing crystals don't break a sweat and keep it easily 45-50% RH.

Moore Bettah Ukuleles
03-01-2015, 07:49 PM
If you need to refill the humifiers with water, they work whether you use regular to distiller water. maybe you need to Coolkayaker's technique and put your ukes in large Tupperware with sponge

Incorrect. The instructions for humidifiers of all types suggest using distiller water to prevent mineral build up rendering them ineffective at absorbing water.

Down Up Dick
03-01-2015, 08:14 PM
This is why I'm not buying any more wooden ukuleles--UAS or no. I just don't wanna be bothered with all the humidity stuff.

From now on it's plastic, carbon fibre or steel for me. :old:

Dan Uke
03-01-2015, 08:15 PM
Incorrect. The instructions for humidifiers of all types suggest using distiller water to prevent mineral build up rendering them ineffective at absorbing water.

I can't imagine the oasis humidifiers to be completely ineffective unless they are are soo old but usually water leaks where the seam are before mineral builds up along the complete liner. Secondly just the construction of the oasis would break th minerals as the lining is not too rigid and you can move it around to take the minerals off the linings if they build off.

With that said, I use distilled water for my humidifiers ��

Steve how old are the Oasis humidifiers?

wayfarer75
03-02-2015, 03:47 AM
i realized that my hydrometers are reading things very inconsistently. i think i have to put this to bed for now.... thanks for all the ideas

Yeah, they can be inaccurate. I don't know what kind you have, but some can be calibrated. I have these; they work well:
http://www.amazon.com/Xikar-832XI-Round-Digital-Hygrometer/dp/B004167OY4
http://www.amazon.com/gp/product/B000H6CZQE/ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944687502&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B004167OY4&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1GSS6KARBC4C7FQ9RWQ3

Stevelele
03-02-2015, 04:05 AM
the oasis humidifiers are two years old. I'm thinking of taking out the crystals and soaking them in vinegar to eliminate the mineral build up. I'd then have to soak them in distilled water to get rid of the smell


I can't imagine the oasis humidifiers to be completely ineffective unless they are are soo old but usually water leaks where the seam are before mineral builds up along the complete liner. Secondly just the construction of the oasis would break th minerals as the lining is not too rigid and you can move it around to take the minerals off the linings if they build off.

With that said, I use distilled water for my humidifiers ��

Steve how old are the Oasis humidifiers?

Dan Uke
03-02-2015, 05:03 AM
the oasis humidifiers are two years old. I'm thinking of taking out the crystals and soaking them in vinegar to eliminate the mineral build up. I'd then have to soak them in distilled water to get rid of the smell

okay two years is getting old. I agree with Chuck now. Good luck with the vinegar but you might want to get a couple new ones in the meantime.

spookelele
03-02-2015, 05:20 AM
I wouldn't soak the crystals in vinegar.
That's not the problem anyway.
If they swell at all, they're doing what they do.
The problem is probably the container the crystals are in.

If you're worried about the crystals, replace them. They're VERY cheap. But again, I really don't think it's the crystals that are the problem. If they can absorb, then they can dry, which is all they need to do.

But the container/tube is the trick. It needs to be able to pass water vapor. 99% of the cost on an oasis is that tube.

DownUpDave
03-02-2015, 05:49 AM
Two things to consider. #1 the accuracy of your hygrometer. I went to Home Depost and looked at a rack of them they were all over the place from 25% - 40%. I bought 4 that all read the same, which read slightly different then the two I have in the house. Point is your gauge could be at fault. #2 If you Oasis is collapsing after 3-4 days that means it is working. The gortex membrane allows moisture to evaporate through it. So if it is collapsing it it working and the pores are not clogged.

If you are worried just do the sponge in a baggie trick for an immediate fix till you get it figured out. If ukes are kept in a hard case and only pulled out an hour a day to play then returned to the case they are not going to explode from lack of moisture. Letting them sit out for months at a time in a very dry enviroment will do that.

Stevelele
03-02-2015, 06:28 AM
Thanks Dave and spookelele, I agree that these things must be working, since theyare definitely collapsing--not sure how long it's taking but it's working. I just bought a new gauge and will see if that works. Really appreciate the help guys


Two things to consider. #1 the accuracy of your hygrometer. I went to Home Depost and looked at a rack of them they were all over the place from 25% - 40%. I bought 4 that all read the same, which read slightly different then the two I have in the house. Point is your gauge could be at fault. #2 If you Oasis is collapsing after 3-4 days that means it is working. The gortex membrane allows moisture to evaporate through it. So if it is collapsing it it working and the pores are not clogged.

If you are worried just do the sponge in a baggie trick for an immediate fix till you get it figured out. If ukes are kept in a hard case and only pulled out an hour a day to play then returned to the case they are not going to explode from lack of moisture. Letting them sit out for months at a time in a very dry enviroment will do that.

Recstar24
03-02-2015, 09:08 AM
The most accurate consumer-grade hygrometer that you can find, based on my research, is the Caliber IV. I believe Amazon has it for $25 but you can find it cheaper occasionally.

I bought a calibrated Caliber IV from David Burgess who is a reputable violin maker. He calibrates it at two data points - 35% and 65% - using 2 different salt solutions and a semi-permeable membrane to register those specific RH values.

I used that calibrated hygrometer to calibrate the one I got from Amazon, and the offset was only 1 point. David had mentioned to me that of all the hygrometers he tested, those were the most accurate. Many he tests in fact are right on and require no offset whatsoever.

http://www.burgessviolins.com/humidity.html

http://www.amazon.com/Caliber-Digital-Hygromter-Western-Humidor/dp/B00JXOKQVW

spookelele
03-02-2015, 09:32 AM
You could make a humidifier.


https://www.youtube.com/watch?v=6QU6IDwAh1Y

After messing with these, the one where I glue the tyvek on is more convenient.
I just fill it up and throw it in the case now, where the one where I did the screen, I have to wait a bit.

Stevelele
03-02-2015, 09:59 AM
that is really clever. I made one with a tic tac box and put a sponge in it--that works pretty well. But this is even better. I have been getting a little worried about the oasis humidifiers because I've seen some reports online that it can leak. that prospect freaks me out


You could make a humidifier.


https://www.youtube.com/watch?v=6QU6IDwAh1Y

After messing with these, the one where I glue the tyvek on is more convenient.
I just fill it up and throw it in the case now, where the one where I did the screen, I have to wait a bit.