---
product_id: 5572299
title: "PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow"
price: "€ 170.77"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/5572299-pencon-conductivity-pen-and-digital-tds-meter-water-tester-temperature
store_origin: NL
region: Netherlands
---

# Instant nutrient readings Waterproof & floats Auto temperature compensation PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow

**Price:** € 170.77
**Availability:** ✅ In Stock

## Summary

> 🌱 Grow smarter, not harder — the ultimate hydroponic nutrient sidekick!

## Quick Answers

- **What is this?** PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow
- **How much does it cost?** € 170.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/5572299-pencon-conductivity-pen-and-digital-tds-meter-water-tester-temperature)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Fully waterproof design that floats—perfect for any hydroponic or aquatic environment 💧
- • **Ready Out of the Box:** Factory calibrated and easy to use—just power on and start testing immediately 🔋
- • **Seamless Integration:** Pair with Bluelab pH pens for a complete nutrient and water quality management system 🌿
- • **Precision Nutrient Monitoring:** Maximize your grow with ultra-fast, accurate TDS, EC, CF, and PPM readings ⚡
- • **Temperature-Resilient Accuracy:** ATC technology ensures consistent results despite temperature fluctuations 🌡️

## Overview

The Bluelab PENCON Conductivity Pen is a professional-grade digital TDS meter designed for hydroponic systems and indoor plant growth. It delivers rapid, accurate readings of nutrient levels (CF, EC, PPM 500, PPM 700) with automatic temperature compensation, ensuring reliable data regardless of environmental changes. Waterproof and buoyant, it’s built for durability and ease of use, coming factory calibrated and ready to optimize your plant feeding strategy. Trusted by growers worldwide and backed by a 1-year warranty, this meter is essential for anyone serious about maximizing yield and maintaining perfect nutrient balance.

## Description

desertcart.com: Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow : Patio, Lawn & Garden

Review: Fast and accurate - Seems very well built superfast reading and very reliable. I’ve been using this one for about a year now with zero issues. It’s so much faster reading than the competitors that I’ve used.
Review: Good quality - Easy to hold and use.

## Features

- Conductivity pen can test and monitor your nutrients (TDS) level to maximize your grow and ensure plants get the balanced feed they need; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing.
- This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; Durable design for repeated uses and fully waterproof and it floats in any solution.
- Calibration optional, the meter comes factory calibrated so it's ready to be used; Regular cleaning is recommended for accurate reading; Different units are available (EC, PPM 500, PPM700, and CF).
- Combine with our pH pens and meters for full garden nutrient monitoring in water and soil; Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, probe care kit is sold separately.
- Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for grower; 1-Year Limited Warranty with proof of purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 1,108 Reviews |

## Images

![PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow - Image 1](https://m.media-amazon.com/images/I/71csSQrRF9L.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Does this pen really have to be calibrated?**
A: These are great pens for the hobbyist just remember when you do not see the check mark on your pH pen or on your PPM EC conductivity bluelab pen it is time to calibrate if you do not see this check mark displayed on either pin on the screen calibrate. I also recommend using the 7.0 bluelab calibration solution followed up by the 4.0 bluelab calibration solution to get a more accurate reading of the pH solution. Also use blue lab calibration solution for your conductivity meter as well these meters will last a very long time I had mine for almost 4 years and still in good shape keep your meters clean keep your pH bulb moist in store in the pH storage solution that is made by blue lab. Never let the bulb go dry if you do it will take 24 hours or it is good to give 24 hours to rehydrate your pH bulb. And if I'm not mistaken on the bottles the calibration solution of either your conductivity meter solution for calibration or your pH pen calibration solution it says on the bottle after opening don't use after three months I don't know if this matters a whole lot or not but I've used my solution over three months plenty of time and no noticeable difference in this. I guess the main thing is to keep your pH pen glass bulb hydrated I believe that this is probably the most important thing when owning a blue lab pH testing pin. If there is anyone to add to this conversation or to give me any advice that's positive please do so I am always willing to learn and listen so please if anyone has any experience with these pins other than me and something that I may not have mentioned or know please tell me or leave a review thank you I hope this has been helpful. And please stay positive with positive feedback just remember people there are no stupid questions and no mistakes only lessons thank you.

**Q: What is ec have to do with my indoor medical grown cannabis plant?**
A: The EC is an indirect measure of the fertilizer salts contained in the substrate, so those target levels will also vary at different growth stages. By starting an in-house nutrient monitoring program and measuring the EC, you can make sure that sufficient levels of fertilizer are available to the plants.

**Q: Mine wont read tap water, right out of the box. Is it defective?**
A: Sure

**Q: Description is contradictory - is this pen ec, ppm (500 & 700), ph and temperature? seller confirm please**
A: No ph

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast and accurate
*by M***E on June 3, 2025*

Seems very well built superfast reading and very reliable. I’ve been using this one for about a year now with zero issues. It’s so much faster reading than the competitors that I’ve used.

### ⭐⭐⭐⭐⭐ Good quality
*by B***Y on August 24, 2025*

Easy to hold and use.

### ⭐⭐⭐⭐⭐ Accurate and easy to use
*by D***S on July 21, 2024*

Have had cheaper pens that have not lasted even with careful use. This pen has lasted through two seasons of almost daily use. Very accurate - hits test solutions perfectly. The extra money spent is worth it unless you like replacing pens every year.

## Frequently Bought Together

- Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow
- bluelab pH Pen - ± 0.1 pH Accurate, Durable Double Junction Probe, Waterproof & Floats, Auto Temperature Compensation, Easy Calibration - Made in NZ
- 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 Netherlands*
*Store origin: NL*
*Last updated: 2026-01-25*