---
product_id: 254231207
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: "HK$135"
currency: HKD
in_stock: true
reviews_count: 5
category: "Boveda"
url: https://www.desertcart.hk/products/254231207-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75
store_origin: HK
region: Hong Kong
---

# Lasts ~1 year, multiple calibrations Patented saltwater-based 75% RH Mess-free airtight calibration 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:** HK$135
**Availability:** ✅ In Stock

## Summary

> 🧂 Calibrate like a pro—never second-guess your humidity again!

## 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?** HK$135 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/254231207-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

- • **Zero Mess, Zero Stress:** Airtight high-density bag ensures a clean, hassle-free calibration experience—no spills, no fuss.
- • **Precision You Can Trust:** Patented saltwater formula guarantees exact 75% relative humidity for flawless calibration.
- • **Long-Lasting Reliability:** Each kit supports multiple calibrations over a full year, keeping your hygrometers accurate and dependable.
- • **Optimize Your Environment:** Perfect for cigars, terrariums, labs, and any humidity-sensitive setup demanding precision.
- • **Professional-Grade Simplicity:** No activation needed—just zip, wait 24 hours, and verify your device’s accuracy with ease.

## Overview

The Boveda One Step Hygrometer Calibration Kit offers a patented saltwater-based, mess-free solution to precisely calibrate digital and analog hygrometers at 75% relative humidity. Designed for ease and accuracy, it requires no activation and lasts about one year, enabling multiple calibrations. Ideal for professionals and enthusiasts who demand reliable humidity readings for cigars, terrariums, labs, and more.

## Description

Even if your hygrometer says it doesn’t need to be calibrated, it does—every 6 months. Find out if your hygrometer is giving accurate readings with the Boveda One-Step Calibration Kit, an easy-to-use, professional-level salt test. An uncalibrated hygrometer is like using no hygrometer. You’ll never get an accurate relative humidity (RH) reading from a hygrometer or humidity sensor until it’s precisely calibrated. A well-calibrated hygrometer gauges if your premium cigars are stored at proper RH. Chemists and lab professionals determine the accuracy of a hygrometer with a “salt” test. Unlike the bottle cap salt test, the Boveda One-Step Calibration Kit is precise, mess-free and ready-to-use. Just slip a hygrometer in the airtight, high-density bag preloaded with Boveda. The patented saltwater-based pack uses natural salts and pure water to achieve 75% RH inside the bag. After 24 hours, check the hygrometer’s reading. If it doesn’t read 75% RH, your hygrometer is off. Simply adjust it, zip it back in the bag with the Boveda and verify the reading the next day. For added accuracy, perform a 2-point calibration with the 32% RH Boveda One-Step Calibration Kit (sold separately) to check the high and low RH readings of your hygrometer. Note: Do not mix different Boveda RH levels within the same humidor. And do not use Boveda in the same humidor with other humidification products because they will fight against each other and reduce the efficiency of Boveda.

Review: Works Well and Accurate - I use humidity sensors in terrariums. With high humidity sensors will raise the humidity as much as 10% in only a few months. For me accuracy is very important. The Boveda calibration kit worked very well for me bringing the calibration within 1% of the 75% target. I especially like the size as I can calibrate more than one sensor at a time. Depending on the size of your sensors they will fit 2 or more. This best part is the accuracy and ease of use.
Review: Está bien - Está bien

## Features

- PATENTED SALTWATER-BASED BOVEDA is the ultimate salt test! Do-it-yourself calibration methods, like bottle cap salt tests are imprecise and inaccurate
- EASY, MESS-FREE CALIBRATION—Simply place a hygrometer or humidity sensor in the airtight high-density bag with the enclosed Boveda humidity pack. Zip closed and check back in a day
- 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"
- Bag Dimensions: 4.5-Inch x 9-Inch.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000A3UBLA |
| Battery Description | No battery needed |
| Battery description | No battery needed |
| Brand | Boveda |
| Brand Name | Boveda |
| Customer Reviews | 4.6 out of 5 stars 3,014 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Global Trade Identification Number | 00850661003311 |
| Included Components | 1 Calibration Kit & 1 Humidity Control Packet |
| Item Dimensions W x H | 14.3W x 0.3H centimeters |
| Item Weight | 14 g |
| Item weight | 14 g |
| Manufacturer | Boveda |
| Product dimensions | 14.3W x 0.3H centimeters |
| Temperature Accuracy | 0.2 degrees_celsius |
| Temperature accuracy | 0.2 degrees_celsius |
| UPC | 850661003311 |
| Unit Count | 1.00 Count |
| Upper Temperature Range | 30 Degrees Celsius |
| Upper temperature rating | 30 Degrees Celsius |

## Product Details

- **Battery description:** No battery needed
- **Brand:** Boveda
- **Item weight:** 0.03 Pounds
- **Product dimensions:** 14.3W x 0.3H centimeters
- **Upper temperature rating:** 30 Degrees Celsius

## 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/71mvEOsEtFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Well and Accurate
*by S***A on 2 June 2024*

I use humidity sensors in terrariums. With high humidity sensors will raise the humidity as much as 10% in only a few months. For me accuracy is very important. The Boveda calibration kit worked very well for me bringing the calibration within 1% of the 75% target. I especially like the size as I can calibrate more than one sensor at a time. Depending on the size of your sensors they will fit 2 or more. This best part is the accuracy and ease of use.

### ⭐⭐⭐⭐⭐ Está bien
*by J***Z on 22 January 2025*

Está bien

### ⭐⭐⭐⭐⭐ Prodotto fantastico
*by W***I on 8 June 2018*

Di sicuro il miglior modo per tarare con estrema precisione il proprio igrometro. Sono rimasto molto soddisfatto! Consiglio l'acquisto a tutti coloro che vogliono incollare la proprio lancetta al 75%.

## 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
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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-06*