---
product_id: 74012676
title: "Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each"
brand: "bluelab"
price: "B/.217"
currency: PAB
in_stock: true
reviews_count: 13
category: "Bluelab"
url: https://www.desertcart.com.pa/products/74012676-bluelab-calibration-solution-ph-4-0-7-0-and-2
store_origin: PA
region: Panama
---

# Accurate 2.77 EC conductivity solution 500 ml volume per solution for extended use Precise pH calibration at 4.0 & 7.0 Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each

**Brand:** bluelab
**Price:** B/.217
**Availability:** ✅ In Stock

## Summary

> 🔬 Stay sharp, stay calibrated — because precision is power.

## Quick Answers

- **What is this?** Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each by bluelab
- **How much does it cost?** B/.217 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/74012676-bluelab-calibration-solution-ph-4-0-7-0-and-2)

## Best For

- bluelab enthusiasts

## Why This Product

- Trusted bluelab brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Supply:** Generous 500 ml bottles provide consistent calibration over multiple uses, reducing downtime.
- • **Precision You Can Trust:** Calibrate your pH and EC probes with lab-grade accuracy to ensure flawless readings every time.
- • **Complete Calibration Kit:** Includes pH 4.0, pH 7.0, and 2.77 EC solutions—everything you need in one sleek package.
- • **Maximize Your Grow Potential:** Accurate water and nutrient measurements mean healthier plants and optimized yields.
- • **Industry-Approved Reliability:** Used by professionals who refuse to compromise on measurement accuracy and quality.

## Overview

Bluelab Calibration Solution kit includes 500 ml bottles of pH 4.0, pH 7.0, and 2.77 EC conductivity solutions designed to maintain the accuracy and reliability of your pH and conductivity probes. Trusted by professionals, this kit ensures precise water and nutrient measurements critical for optimal plant growth and scientific applications.

## Description

Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each: desertcart.com: Industrial & Scientific

Review: Calibration fluids - Exactly what I expected
Review: Gotta have it. - If your using a ph meter or dissolved solids meter this is a must have. Not cheap but accurate. If you want your grow to turn out right you need accurate info on your water ph and fertilizer strength. Don’t think you can compromise here. Not cheap but reliable.

## Features

- This kit contains everything needed to keep your pH and conductivity probes clean and accurate.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BRBJD77 |
| Best Sellers Rank | #50,217 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Electrolyte Solutions |
| Date First Available | October 18, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.45 pounds |
| Product Dimensions | 6 x 3 x 4 inches |
| UPC | 680666717124 |

## Product Details

- **Brand:** Bluelab
- **Item Form:** Liquid
- **Item Volume:** 500 Milliliters
- **Manufacturer:** Bluelab
- **Package Information:** Bottle

## Images

![Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Image 1](https://m.media-amazon.com/images/I/717uGQpRECL.jpg)
![Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Image 2](https://m.media-amazon.com/images/I/81mNcCW-ndL.jpg)
![Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Image 3](https://m.media-amazon.com/images/I/7190L19cS-L.jpg)
![Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Image 4](https://m.media-amazon.com/images/I/71DiBNtO00L.jpg)
![Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Image 5](https://m.media-amazon.com/images/I/71HHSv1LbGL.jpg)

## Questions & Answers

**Q: What is the difference between kcl storage solution and 2.77 ec conductivity standard solution?? both of them contain kcl and water..**
A: It is actually 27.7 the description is a typo.
Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each.
Look at the label on the bottle.

**Q: How long does the 7.0 and 4.0 solutions last once opened?  I assume you pour out a little each time you calibrate.  Is 70 F a good temp to store it?**
A: I have had mine since February and I keep it under the sink in about70°. It seems to be just fine I also reuse my calibration solution as I am careful not to contaminate it

## Customer Reviews

### ⭐⭐⭐⭐⭐ Calibration fluids
*by T***R on April 8, 2024*

Exactly what I expected

### ⭐⭐⭐⭐⭐ Gotta have it.
*by M***S on October 30, 2022*

If your using a ph meter or dissolved solids meter this is a must have. Not cheap but accurate. If you want your grow to turn out right you need accurate info on your water ph and fertilizer strength. Don’t think you can compromise here. Not cheap but reliable.

### ⭐⭐⭐⭐⭐ Lighting fast shipping!
*by E***5 on January 18, 2021*

Exactly as described sealed bottles and Very fast shipping! Couldn't be more satisfied with purchase.

## Frequently Bought Together

- Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each
- Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow White

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-21*