--- product_id: 383862801 title: "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" brand: "boveda" price: "₨10828" currency: LKR in_stock: true reviews_count: 5 category: "Boveda" url: https://www.desertcart.lk/products/383862801-one-step-hygrometer-mess-free-calibration-kit-preloaded-75-rh store_origin: LK region: Sri Lanka --- # 24-hour precise calibration ±0.2% RH accuracy validation Reusable up to 1 year 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 **Brand:** boveda **Price:** ₨10828 **Availability:** ✅ In Stock ## Summary > 🔧 Calibrate Like a Pro, Never Miss a Beat! ## Quick Answers - **What is this?** 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 by boveda - **How much does it cost?** ₨10828 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/383862801-one-step-hygrometer-mess-free-calibration-kit-preloaded-75-rh) ## 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 - • **Universal Compatibility:** Perfect for digital and analog hygrometers, ensuring your humidity sensors stay flawlessly accurate. - • **Long-Lasting & Multi-Use:** Calibrate multiple devices over a full year with a single kit, maximizing value and convenience. - • **Effortless 24-Hour Calibration:** Simply seal your hygrometer inside and get lab-grade 75% RH accuracy without any hassle. - • **Trusted Lab-Standard Precision:** Utilizes the widely accepted 75.5% RH salt test method for reliable, professional-grade results. - • **Maintenance-Free & Ready to Use:** No activation needed—just unzip, insert, and calibrate with zero fuss. ## Overview The Boveda One Step Hygrometer Calibration Kit offers a simple, maintenance-free way to achieve precise 75% RH calibration for any digital or analog hygrometer. Trusted by professionals, it delivers lab-standard accuracy within 24 hours, lasts up to a year for multiple uses, and requires no activation—making it the ultimate tool for flawless humidity control. ## Description The 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: I can trust it for my cigar humidors and “tupper-does” - Tested across my three hydrometers I use and after a week of them being in a sealed bag and container they didn’t vary more than 0,2% rh , so I think this process works reliably. Don’t know if the packet was exactly the rh indicated but I think it’s close enough for my needs. This is better than other methods I’ve tried. Review: Very easy to use - Ass always, boveda is the best for your cigars ## 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. - Bag Dimensions: 4.5-Inch x 9-Inch. - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000A3UBLA | | Brand | Boveda | | Brand Name | Boveda | | Colour | Brown | | Country of Origin | USA | | Customer Reviews | 4.6 out of 5 stars 3,042 Reviews | | Global Trade Identification Number | 00850661003311 | | Included Components | 1 Calibration Kit & 1 Humidity Control Packet | | Item Weight | 0.03 Pounds | | Manufacturer | Humidi-Pak | | Material Type | Plastic | | Model Name | CAL75-SM | | Model Number | CAL75-SM | | 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 | | 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 | | Warranty Description | no warranty available | ## Product Details - **Battery Description:** No batteries required - **Brand:** Boveda - **Colour:** White - **Item Weight:** 14 g - **Manufacturer:** Humidi-Pak ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61bJ1fEGCaL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ I can trust it for my cigar humidors and “tupper-does” *by 5***E on 19 April 2026* Tested across my three hydrometers I use and after a week of them being in a sealed bag and container they didn’t vary more than 0,2% rh , so I think this process works reliably. Don’t know if the packet was exactly the rh indicated but I think it’s close enough for my needs. This is better than other methods I’ve tried. ### ⭐⭐⭐⭐⭐ Very easy to use *by I***H on 16 July 2024* Ass always, boveda is the best for your cigars ### ⭐⭐⭐⭐⭐ Está bien *by J***Z on 22 January 2025* Está bien ## 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.lk/products/383862801-one-step-hygrometer-mess-free-calibration-kit-preloaded-75-rh](https://www.desertcart.lk/products/383862801-one-step-hygrometer-mess-free-calibration-kit-preloaded-75-rh) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-08-14*