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Beginner Cigar Guide – Easiest Way to Calibrate Your Hygrometer

8th Jun 2020

What's going on, everybody. This is Gerard with In today's video, we're going to talk about how to calibrate your hygrometer in very easy steps. But before we begin, I need you click on that subscribe button. Also, click on the bell to be notified every single week on a new episode of Mondays with Mardo's.

Okay. So one of the most important tools when it comes to storing cigars is a hygrometer. And today we're going to show you how to calibrate this the easiest way. So therefore you don't have to measure or mix your own solution. You're probably asking yourself just how easy is it to really calibrate this thing? Well, I got three words for you guys. Boveda, Boveda, Boveda. That's right. They don't make just humidification packs. They also make this calibration kit for hydrometers. It is so simple. It is three steps. They have the instructions right here, so we're going to go ahead and follow that. The hygrometer is already turned on. This one is reading in Celsius. So we'll go ahead and remove the battery cap, click on that button right there. That will switch it to Fahrenheit. So it's reading 70. Well, we are in California, so it's reading 79 degrees Fahrenheit and 57% humidity.

Step 1

So I'm going to follow this step right here. It does have a Boveda pack inside that reach 75% RH. So that is going to be our goal. Step one, place your hygrometer or your sensor inside the completely reclosable zipper lock bag. In this case, it's more of like a Ziploc. So, go ahead and open it and we're going to place the hygrometer inside, and we're going to go ahead and seal it. And by the way, this calibration kit is good for 24 days, up to 30 days after opening it because it has a very thick material plastic on it.

Step 2

So step two says, allow the kit to sit for a minimum of 24 hours at a room temperature between 65 and 75 degrees. We're pretty much in the ballpark. So now what we're going to do is going to get 24 hours and we're going to come back to you guys and see what this thing is reading at.

Step 3

All right, everyone. So we are back. It's been a little bit over 24 hours for us. So we are going to go ahead and take a look at what our hygrometer is reading. I can already see, but for the sake of the video, I'll pull it out. And it is reading at 77% humidity. So, that is a little bit over 75%. However, Boveda has thought this process through already, and what they have done is in step three of the instructions, they have noted something for us, and I'm going to go ahead and read it for you guys. It says if their reading is higher or lower than 75% relative humidity, note the difference as the margin of error for future readings. So therefore, anytime that I'm going to read the hygrometer, I'm always going to know that it's off by 2%. So what I'll do now is I'll take this unit and I'll place it in my humidor and whatever it is reading, I'll always give it that 2% margin. So therefore I know exactly where I'm at.

Check it Out

Also along with this calibration kit, you can also calibrate your Boveda Butler. The Boveda Butler is a phenomenal piece of equipment that can allow you to see your RH level from a mobile device. So therefore you don't always have to open the lid over your humidor. Other than that, I do want to let you guys know that this is a very inexpensive calibration kit. It is only $6.99 at anywhere that is a Boveda dealer. So if you also want to know where to get these online, you can go to, and we do have these available for you guys. Other than that, I want to hear in the comments, what do you guys use to calibrate your hygrometer? I will see you next week on Mondays with Mardo's. And I'm Gerard. Remember to follow us on Instagram, like us on Facebook and subscribe to our YouTube channel.