If you're a cigar aficionado, you need a hygrometer to make sure you're storing your wares at the correct humidity. Research source It doesn't sound like it's broken. When my primary residence was built in 1998, the builder installed a Lutron HomeWorks whole-house lighting system. For you chemistry buffs, when water (H2O) and salt (NaCl) are in a saturated solution at equilibrium, the result is 75% relative humidity. The readings for these should be 11%; 33%; 43%; and 97% respectively. I liked the addition of citations also. Step 3: Place the lid inside the zip-lock bag, then place the hygrometer inside the bag, display side up, near to the bottle cap. Include your email address to get a message when this question is answered. Boost your career: Improve your Zoom skills. The relative humidity in the sealed bag with the salt/water mix should be 75 percent. I would have to subtract 5 percent from readings when using the hygrometer to get an accurate relative humidity.

One shows the room at 25%, and the other shows it at 40%. I will now add 3 percent to the readings I take on the hygrometer (e.g. If you add too much, use paper towels to mop up the excess.

The Calibrating Packs are easy to use and pretty accurate. ", "This is the first time I have ever found instructions for a hygrometer. I know 1% isn't much but was wondering as the title states how forgiving the salt test is. If there is no way to adjust them, make a note of the calibration result and then you can simply add or subtract from the actual reading to get a more accurate humidity level (this is discussed in greater detail after the calibration process is explained). You can pour off excess water if you put too much in, or play with the water/salt mixture to get it right.

All tip submissions are carefully reviewed before being published. Keep in mind that this is true only at room temperature (20 °C), the whole process is temperature-dependent. 12 Best Saltwater Aquarium Products of 2020, The Best 9 Controllers and Monitors for Your Aquarium, How to Set up a Sand Tank for Pet Hermit Crab, Spiny-Tailed Lizard (Uromastyx): Species Profile, Naturally Fresh Walnut-Based Quick-Clumping Cat Litter Review, The 8 Best Air Purifiers for Pet Owners of 2020, SportDOG FieldTrainer 425X Training Collar Review, Nylabone Healthy Edibles Puppy Chew Treats Review, Purina Yesterday’s News Unscented Paper Cat Litter Review. If your hygrometer is "high end" or under warranty or mechanical, it may or may not be possible or worth the cost to have it repaired. 2. Hygrometer Calibration Salt Test: If you are looking for alternate option, this calibration procedure is a bit more technical. 4. If you have a cage for your pet lizard or frog, you can use the salt test to calibrate a hygrometer, an instrument used to measure relative humidity. Give a hygrometer about two hours to stabilize before taking a reading, as changes in the ​relative humidity may take a while to register accurately on a hygrometer. Don't add so much water that the salt dissolves; you just want it to be wet. It should have read 75 percent, a difference of 5 percent. Place the sealed bag aside at room temperature for eight to 12 hours. Approved. My guess is they're owned by the same company that makes the Boveda packs and they're just trying to push their products on people. Use the following series of diagrams to learn how to calibrate a hygrometer. ", "It is good and provides more information.". 3. The humidity in your humidor should be kept between 68 and 72 percent to keep your cigars fresh. To ensure that your hygrometer is functioning properly, it is best to test it prior to use, then calibrate it if necessary. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. The HygroSet II reads 70% humidity and the AcuRite reads 69%. The temperature should be fairly constant. In the salt test, using the same container, the first goes to 80% and the second goes to 75%. Place the salt/water mix in a re-sealable plastic bag, along with the hygrometer, and seal the bag. The cup with salt and water is placed in a bag (the hygromter should then be carefully placed in the bag, then the bag is sealed). By using our site, you agree to our. If it reads below 75 percent, you will need to add the difference to your actual readings. I didn't know if I put enough salt, too much water, etc. I initially added a bit too much water (since the salt was fully saturated and sitting in the water) so I added a bit more salt to compensate until it was (as I would describe it...) thoroughly damp but not sitting in water. Some dial types will have a small screw or adjustment on the back so you can adjust them after calibration. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Time for a new one.