---
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: "R$308"
currency: BRL
in_stock: true
reviews_count: 5
category: "Boveda"
url: https://www.desertcart.com.br/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75
store_origin: BR
region: Brazil
---

# 24-hour calibration cycle ±1% calibration accuracy Reusable for up to 1 year 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:** R$308
**Availability:** ✅ In Stock

## Summary

> 📏 Nail your humidity game with lab-precision calibration!

## 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?** R$308 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/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

- • **Lab-Grade Accuracy:** Trusted 75% RH standard ensures your sensors are spot-on every time.
- • **Long-Lasting Value:** Reusable for up to a year with a 2-year shelf life unopened.
- • **Effortless Precision:** Calibrate any hygrometer in just 24 hours with zero hassle.
- • **Multi-Sensor Friendly:** Generous 4.5” x 9” bag fits multiple devices for batch calibration.
- • **Maintenance-Free Reliability:** No activation or batteries needed—just seal and wait.

## Overview

The Boveda One Step Hygrometer Calibration Kit offers a simple, maintenance-free way to verify and adjust the accuracy of digital and analog hygrometers using a trusted 75% relative humidity environment. Designed for professionals and enthusiasts alike, it fits multiple sensors, requires no batteries or activation, and delivers reliable results within 24 hours. With a reusable lifespan of up to one year and a two-year shelf life unopened, it’s the go-to solution for precise 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 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

## 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 |
| Battery Description | No batteries required |
| Brand | Boveda |
| Brand Name | Boveda |
| Colour | White |
| Country of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 3,009 Reviews |
| Global Trade Identification Number | 00850661003311 |
| Item Height | 0.25 Inches |
| Item Weight | 14 g |
| Manufacturer | Humidi-Pak |
| UPC | 850661003311 |
| Warranty Description | no warranty available |

## Product Details

- **Battery Description:** No batteries required
- **Brand:** Boveda
- **Colour:** White
- **Item Weight:** 14 g
- **Manufacturer:** Humidi-Pak

## 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/41aXdz315UL.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/51BNSzJWXQL.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/51TgjrFE4LL.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/51jlndYj-5L.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 5](https://m.media-amazon.com/images/I/51lhW7bf8zL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*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.

### ⭐⭐⭐⭐⭐ Review
*by J***Z on 22 January 2025*

Está bien

### ⭐⭐⭐⭐⭐ Review
*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 Brazil*
*Store origin: BR*
*Last updated: 2026-02-12*