---
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: "₹ 3853"
currency: INR
in_stock: true
reviews_count: 5
category: "Boveda"
url: https://www.desertcart.in/products/383862801-boveda-one-step-hygrometer-mess-free-calibration-kit-preloaded-75
store_origin: IN
region: India
---

# 24-36h precise calibration wait 75.5% RH stable humidity standard Reusable up to 3 months 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:** ₹ 3853
**Availability:** ✅ In Stock

## Summary

> 📏 Calibrate Like a Pro — Never Miss a Beat in Humidity Accuracy!

## 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?** ₹ 3853 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/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

- • **Long-Lasting & Reusable:** Good for multiple calibrations over a 1-year lifespan and reusable for up to 3 months.
- • **Universal Compatibility:** Perfect for digital and analog hygrometers, ensuring your sensors always deliver trusted readings.
- • **Compact & Portable Design:** 4.5” x 9” bag fits easily in any storage space or humidor for on-the-go calibration.
- • **Maintenance-Free & Ready to Use:** No activation needed—just unbox and calibrate with zero hassle.
- • **Effortless Precision Calibration:** Simply zip your hygrometer inside and wait 24-36 hours for lab-grade 75.5% RH accuracy.

## Overview

The Boveda One Step Hygrometer Calibration Kit offers a foolproof, maintenance-free method to calibrate any digital or analog hygrometer using a stable 75.5% relative humidity environment. Simply seal your device inside the reusable bag, wait 24-36 hours, and adjust your readings for lab-grade precision. Compact, long-lasting, and trusted by professionals, it ensures your humidity sensors deliver flawless accuracy every time.

## 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: These Work - but Be Patient - I've used this to calibrate 4 hygrometers so far: 3x SensorPush sensors and 1x AcuRite 01080 Pro . It's incredibly easy to do, just zip the hygrometer into the bag and wait. Once the humidity readings settle, they should read exactly 75.5%. There are a few things to be aware of: 1) This is advertised as both a 75% and 75.5% calibration kit. In reality it is 75.5% - but that half % isn't overly meaningful for most hygrometers - especially if they don't report decimal points anyway. Just keep in mind that if yours does report decimal places, you should target 75.5%. 2) Be patient! This is advertised as taking between 24-36 hours for the humidity to settle, and I read several reviews where people thought it was done in as little as 6-8 hours. With the ones I've calibrated, they got within 5% of the final RH in the first 6 hours - and were within 2% of the final RH within 24 hours. In all 4 cases, they didn't truly settle until close to the 36 hour mark and I would have been miscalibrating the hygrometers if I pulled them out early. Just remember, if you're going to go through the trouble of calibrating your hygrometer, be patient and wait a full 36 hours. Ending the calibration early won't help if the calibration ends up being incorrect. (NOTE: I wouldn't have even noticed it wasn't done if I weren't looking at the SensorPush graphs on the first calibration - it seemed like it had settled when just looking at the current numbers.) Another thing that wasn't clear to me is that these packs are re-usable for up to 3 months. If you have 3 hygrometers to calibrate, you don't need 3 packs - just calibrate them back to back (which for me, made it even harder to be patient when I realized the humidity level was still creeping up slowly after 24 hours). If you do care enough about the accuracy of your hygrometer to go through the trouble of calibrating them - then I highly recommend using these little packs from Boveda. The overall process couldn't be simpler.
Review: Está bien - 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 |
| Brand | Boveda |
| Brand Name | Boveda |
| Colour | Brown |
| Customer Reviews | 4.6 out of 5 stars 3,050 Reviews |
| 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 |
| 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

- **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/61bJ1fEGCaL.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/61myzOQAniL.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/61V9BHg-+zL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ These Work - but Be Patient
*by D***Y on 3 December 2017*

I've used this to calibrate 4 hygrometers so far: 3x SensorPush sensors and 1x AcuRite 01080 Pro . It's incredibly easy to do, just zip the hygrometer into the bag and wait. Once the humidity readings settle, they should read exactly 75.5%. There are a few things to be aware of: 1) This is advertised as both a 75% and 75.5% calibration kit. In reality it is 75.5% - but that half % isn't overly meaningful for most hygrometers - especially if they don't report decimal points anyway. Just keep in mind that if yours does report decimal places, you should target 75.5%. 2) Be patient! This is advertised as taking between 24-36 hours for the humidity to settle, and I read several reviews where people thought it was done in as little as 6-8 hours. With the ones I've calibrated, they got within 5% of the final RH in the first 6 hours - and were within 2% of the final RH within 24 hours. In all 4 cases, they didn't truly settle until close to the 36 hour mark and I would have been miscalibrating the hygrometers if I pulled them out early. Just remember, if you're going to go through the trouble of calibrating your hygrometer, be patient and wait a full 36 hours. Ending the calibration early won't help if the calibration ends up being incorrect. (NOTE: I wouldn't have even noticed it wasn't done if I weren't looking at the SensorPush graphs on the first calibration - it seemed like it had settled when just looking at the current numbers.) Another thing that wasn't clear to me is that these packs are re-usable for up to 3 months. If you have 3 hygrometers to calibrate, you don't need 3 packs - just calibrate them back to back (which for me, made it even harder to be patient when I realized the humidity level was still creeping up slowly after 24 hours). If you do care enough about the accuracy of your hygrometer to go through the trouble of calibrating them - then I highly recommend using these little packs from Boveda. The overall process couldn't be simpler.

### ⭐⭐⭐⭐⭐ 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%.

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*Product available on Desertcart India*
*Store origin: IN*
*Last updated: 2026-09-25*