--- product_id: 48326974 title: "Boveda One-Step Hygrometer Calibration Kit" brand: "boveda" price: "128 Lei" currency: RON in_stock: true reviews_count: 13 category: "Boveda" url: https://www.desertcart.ro/products/48326974-boveda-one-step-hygrometer-calibration-kit store_origin: RO region: Romania --- # 24-hour precise calibration 75% RH stable humidity environment airtight reusable bag Boveda One-Step Hygrometer Calibration Kit **Brand:** boveda **Price:** 128 Lei **Availability:** ✅ In Stock ## Summary > 🔧 Calibrate like a pro — never second-guess your humidity readings again! ## Quick Answers - **What is this?** Boveda One-Step Hygrometer Calibration Kit by boveda - **How much does it cost?** 128 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/48326974-boveda-one-step-hygrometer-calibration-kit) ## Best For - boveda enthusiasts ## Why This Product - Trusted boveda brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Two-Way Humidity Control:** Safely adds or removes moisture to preserve sensor accuracy and device longevity. - • **Compact & Portable Design:** Fits any small hygrometer with a sleek 5.5" x 7" airtight bag for on-the-go calibration. - • **Maintenance-Free & Long-Lasting:** No activation needed; each kit lasts up to one year for multiple uses. - • **Effortless Precision Calibration:** Simply seal your hygrometer and wait 24 hours for lab-grade accuracy. - • **Trusted 75% Relative Humidity Standard:** Industry-accepted benchmark ensures your readings are always reliable. ## Overview The Boveda One-Step Hygrometer Calibration Kit offers a foolproof, maintenance-free method to calibrate any digital or analog hygrometer with a stable 75% relative humidity environment. Using a reusable airtight bag and a lab-trusted humidity standard, it delivers precise calibration results in just 24 hours, lasting up to a year for multiple recalibrations. Ideal for professionals and enthusiasts who demand accuracy and reliability in humidity measurement. ## Description The Boveda One-Step Calibration Kit is a simple and surefire method to accurately calibrate any digital or analog hygrometer or humidity sensor. The One-Step Calibration Kit utilizes Boveda's 75.5% relative humidity standard, which is widely used and accepted by chemists and lab professionals to determine the accuracy of any hygrometer (also known as the \"salt test\"). Simply place your hygrometer inside the bag, close the zipper, and wait 24 hours. A perfectly-calibrated hygrometer will read 75% Rh. If your hygrometer reads above or below 75%, adjust the calibration by the number of percentage points it is off from 75%. Review: Excellent - I'm in the process of designing a product that measures the temperature and humidity of beehives. There are plenty of temperature sensors on the market that are cheap and accurate, but humidity sensors are generally pretty expensive in comparison and, as I've discovered, wildly inaccurate. Having purchased a sensor that I had some confidence in, I needed to test it. I created my own testbed, with very accurate control of temperature, but I needed a way to accurately define a level of humidity. There are a plethora of YouTube vids on the subject demonstrating how this can be achieved using a home-made salt solution in a bottle cap, but even having purchased some lab-grade sodium chloride and distilled water my results were all over the place. It was while I was doing more research along these lines when I can across some adverts for Boveda products in relation to maintaining the humidity in humidors, a cupboard for cigars. Looking at the Boveda website I discovered that they produce larger product packs for cigars, but also produce smaller packs with high tolerance chemical solutions that can be used for hygrometer (an instrument used for measuring the amount of humidity and water vapour in the atmosphere) calibration and purchased a pack. The Boveda One-Step Hygrometer Calibration Kit allows a high degree of reliability, with a high degree of accuracy simply by placing the hygrometer, or in my case the sensor, in a small airtight container. The kit comes complete with an air-tight plastic bag and the Boveda humidity pack. To use it, you just put the device to be tested in the bad and let the humidity in the bag settle for 12 hours or so, it's as simple as that. In my case, I placed the sensor in a small bag, sealed the bag around the wires from the sensor and placed the whole pack into my chiller. At a consistent 21.5 DegC (+/- 0.3 DegC), I let the sensor soak for a day and then analysed the results. Long story short then, the results where excellent. Incredibly stable humidity results, at exactly the level I was expecting, well within the tolerances stated by Bovida and the sensor I was calibrating during my experiments. I certainly won't be mucking about with salt solutions any more. My only regret is that I've spent a fair amount of money of lab-grade chemicals and that my better half is getting peeved with the 1Kg of salt that's taking up cupboard space. Still, I guess I can use it on my fish & chips? Review: Perfect Calibration for Small Hygrometers - This is a must have for anyone wanting to check and adjust a small hygrometer. Very easy to use and gives reliable results. Even if your hygrometer is not adjustable you can at least see if it is in error and mentally compensate to get a true RH reading. ## Features - Simply place your hygrometer inside the bag, close the zipper, and wait 24 hours. A perfectly-calibrated hygrometer will read 75% RH. If your hygrometer reads above or below 75%, adjust the calibration by the number of percentage points it is off from 75%. - Completely maintenance free - no activation required. Easy to use. - Lasts approximately one year, good for multiple calibrations. Shelf life before opening is a minimum of 2 years. - Produces an environment of 75-percent humidity - Exterior Bag Dimensions: 5.5" x 7" - Interior Bag Dimensions: Approx 4" x 4.5" ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000A3UBLA | | Brand | Boveda | | Brand Name | Boveda | | Colour | Brown | | Customer Reviews | 4.6 out of 5 stars 3,040 Reviews | | EU Spare Part Availability Duration | 2 Years | | Global Trade Identification Number | 00850661003311 | | Included Components | 1 Calibration Kit & 1 Humidity Control Packet | | Item Weight | 14 g | | Item weight | 14 g | | Manufacturer | Quality Importers Trading Co, Inc. | | Material | Plastic | | Model Name | CAL75-SM | | Model Number | CAL75-SM | | Operation Mode | Manual | | Operation mode | Manual | | Other Special Features of the Product | Two-Way Humidity Control | Safe to Touch items | Adds/Removes Moisture | Preserves Aroma, Flavor & Freshness | Long Term & Short Term Storage | Replace Every 3 Months | | Part Number | CAL75-SM | | Room Type | Add Boveda to Airtight Container, Glass Jar, Storage Bags, Humidor and More to Maintain Humidity | | Room type | Add Boveda to Airtight Container, Glass Jar, Storage Bags, Humidor and More to Maintain Humidity | | Runtime | 24 hours | | Smart Home Compatibility | Not Smart Home Compatible | | Special feature | Two-Way Humidity Control | Safe to Touch items | Adds/Removes Moisture | Preserves Aroma, Flavor & Freshness | Long Term & Short Term Storage | Replace Every 3 Months Special feature Two-Way Humidity Control | Safe to Touch items | Adds/Removes Moisture | Preserves Aroma, Flavor & Freshness | Long Term & Short Term Storage | Replace Every 3 Months See more | | UPC | 850661003311 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Boveda - **Colour:** Brown - **Item weight:** 14 g - **Operation mode:** Manual ## Images ![Boveda One-Step Hygrometer Calibration Kit - Image 1](https://m.media-amazon.com/images/I/61bJ1fEGCaL.jpg) ![Boveda One-Step Hygrometer Calibration Kit - Image 2](https://m.media-amazon.com/images/I/61myzOQAniL.jpg) ![Boveda One-Step Hygrometer Calibration Kit - Image 3](https://m.media-amazon.com/images/I/61V9BHg-+zL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by T***M on 9 October 2018* I'm in the process of designing a product that measures the temperature and humidity of beehives. There are plenty of temperature sensors on the market that are cheap and accurate, but humidity sensors are generally pretty expensive in comparison and, as I've discovered, wildly inaccurate. Having purchased a sensor that I had some confidence in, I needed to test it. I created my own testbed, with very accurate control of temperature, but I needed a way to accurately define a level of humidity. There are a plethora of YouTube vids on the subject demonstrating how this can be achieved using a home-made salt solution in a bottle cap, but even having purchased some lab-grade sodium chloride and distilled water my results were all over the place. It was while I was doing more research along these lines when I can across some adverts for Boveda products in relation to maintaining the humidity in humidors, a cupboard for cigars. Looking at the Boveda website I discovered that they produce larger product packs for cigars, but also produce smaller packs with high tolerance chemical solutions that can be used for hygrometer (an instrument used for measuring the amount of humidity and water vapour in the atmosphere) calibration and purchased a pack. The Boveda One-Step Hygrometer Calibration Kit allows a high degree of reliability, with a high degree of accuracy simply by placing the hygrometer, or in my case the sensor, in a small airtight container. The kit comes complete with an air-tight plastic bag and the Boveda humidity pack. To use it, you just put the device to be tested in the bad and let the humidity in the bag settle for 12 hours or so, it's as simple as that. In my case, I placed the sensor in a small bag, sealed the bag around the wires from the sensor and placed the whole pack into my chiller. At a consistent 21.5 DegC (+/- 0.3 DegC), I let the sensor soak for a day and then analysed the results. Long story short then, the results where excellent. Incredibly stable humidity results, at exactly the level I was expecting, well within the tolerances stated by Bovida and the sensor I was calibrating during my experiments. I certainly won't be mucking about with salt solutions any more. My only regret is that I've spent a fair amount of money of lab-grade chemicals and that my better half is getting peeved with the 1Kg of salt that's taking up cupboard space. Still, I guess I can use it on my fish & chips? ### ⭐⭐⭐⭐⭐ Perfect Calibration for Small Hygrometers *by A***W on 12 April 2017* This is a must have for anyone wanting to check and adjust a small hygrometer. Very easy to use and gives reliable results. Even if your hygrometer is not adjustable you can at least see if it is in error and mentally compensate to get a true RH reading. ### ⭐⭐⭐⭐⭐ Works well. *by A***R on 5 September 2025* I got this to measure the humidity for a cigar humidor. Easy to connect to Bluetooth. I calibrated the humidity and it was spot on with no adjustments needed. ## Frequently Bought Together - Boveda One Step Hygrometer Mess Free Calibration Kit – Preloaded 75% RH 2-Way Humidity Control – Hygrometer Accuracy – Precise Test for Digital and Analog Hygrometers and Humidity Sensors – 1 Count - Govee Bluetooth Hygrometer Thermometer, Wireless Thermometer, Mini Humidity Sensor with Notification Alert, Data Storage and Export, 262 Feet Connecting Range - Boveda 72% Two-Way Humidity Control Packs For Wood Humidifier Boxes – Size 60 – 4 Pack – Moisture Absorbers – Humidifier Packs – Hydration Packets in Resealable Bag --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ro/products/48326974-boveda-one-step-hygrometer-calibration-kit](https://www.desertcart.ro/products/48326974-boveda-one-step-hygrometer-calibration-kit) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-06-13*