--- product_id: 383862801 title: "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" brand: "boveda" price: "€ 32.00" currency: EUR in_stock: true category: "Boveda" url: https://www.desertcart.be/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75 store_origin: BE region: Belgium --- # 24-hour quick calibration 75% RH precision standard airtight reusable bag 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 **Brand:** boveda **Price:** € 32.00 **Availability:** ✅ In Stock ## Summary > 🔧 Calibrate like a pro, measure with confidence. ## Quick Answers - **What is this?** 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 by boveda - **How much does it cost?** € 32.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75) ## 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 - • **Effortless Setup:** Just zip, wait 24 hours, and get a foolproof reading—no activation or maintenance needed. - • **Compact & Portable:** Slim 4.5” x 9” bag fits anywhere—perfect for on-the-go professionals who demand accuracy. - • **Lab-Grade Accuracy:** Calibrate any hygrometer to a precise 75% relative humidity standard trusted by chemists and pros. - • **Universal Compatibility:** Works seamlessly with both digital and analog hygrometers and humidity sensors. - • **Long-Lasting Reliability:** Reusable for multiple calibrations and effective for up to one year unopened, ensuring ongoing precision. ## Overview The Boveda One Step Hygrometer Calibration Kit offers a simple, maintenance-free way to ensure your hygrometer reads exactly 75% relative humidity. Trusted by lab professionals, it uses a preloaded, airtight bag that creates a stable humidity environment in just 24 hours. Compatible with all hygrometer types, this compact kit lasts up to a year and guarantees precise, repeatable calibration for flawless humidity monitoring. ## 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%. ## 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 Name | Boveda | | Colour | Brown | | Country of Origin | USA | | Customer Reviews | 4.6 4.6 out of 5 stars (3,051) | | Global Trade Identification Number | 00850661003311 | | Included Components | 1 Calibration Kit & 1 Humidity Control Packet | | Item Weight | 14 g | | Manufacturer | Humidi-Pak | | Material Type | Plastic | | Model Name | CAL75-SM | | Model Number | CAL75-SM | | Number of Packs | 1 | | 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 | | UPC | 850661003311 | | Unit Count | 1.0 Count | | Warranty Description | no warranty available | ## Product Details - **Brand:** Boveda - **Colour:** Brown - **Item Weight:** 14 g - **Operation Mode:** Manual ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/41OHj9BRYjL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/41HMC+uLXvL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/41kdxY8FXdL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/61bJ1fEGCaL.jpg) ## 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.be/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75](https://www.desertcart.be/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-13*