---
product_id: 48326974
title: "One-Step Hygrometer Calibration Kit"
brand: "boveda"
price: "132 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Boveda"
url: https://www.desertcart.ro/products/48326974-one-step-hygrometer-calibration-kit
store_origin: RO
region: Romania
---

# 24-hour precise calibration 75% RH stable environment airtight reusable bag One-Step Hygrometer Calibration Kit

**Brand:** boveda
**Price:** 132 Lei
**Availability:** ✅ In Stock

## Summary

> 🔧 Calibrate like a pro, never second-guess your humidity again!

## Quick Answers

- **What is this?** One-Step Hygrometer Calibration Kit by boveda
- **How much does it cost?** 132 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-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

- • **Compact & Portable Design:** Fits any small hygrometer with a sleek, reusable airtight bag for on-the-go precision.
- • **Effortless 24-Hour Accuracy:** Simply seal your hygrometer and wait a day for lab-grade precision.
- • **Long-Lasting Calibration Power:** One kit lasts up to a year with multiple uses, saving you time and money.
- • **Maintenance-Free & Ready to Use:** No activation needed—just open, seal, and calibrate.
- • **Trusted 75% Relative Humidity Standard:** Calibrate with the industry gold standard used by chemists and pros.

## 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-accepted humidity standard, it delivers precise calibration results in just 24 hours, lasting up to a year for multiple recalibrations—perfect for professionals demanding accuracy and reliability.

## 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 |
| Colour | Brown |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,207) |
| Date First Available | 19 Nov. 2010 |
| Item Weight | 13.6 g |
| Material | Plastic |
| Model Number | CAL75-SM |
| Product Dimensions | 11.43 x 22.86 x 0.64 cm; 13.61 g |
| Runtime | 24 hours |
| Special Features | Two-Way Humidity Control | Safe to Touch items | Adds/Removes Moisture | Preserves Aroma, Flavor & Freshness | Long Term & Short Term Storage | Replace Every 3 Months |

## Product Details

- **Battery description:** No battery needed
- **Brand:** Boveda
- **Colour:** Brown
- **Item weight:** 14 g
- **Product dimensions:** 14.3W x 0.3H centimetres

## Images

![One-Step Hygrometer Calibration Kit - Image 1](https://m.media-amazon.com/images/I/71mvEOsEtFL.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

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-31*