Why should I choose the Bluelab OnePen over other combination pH and conductivity pens?

Simply put, the Bluelab OnePen is the most advanced all-in-one pH & conductivity pen on the market. Getting to a stable reading is lightning fast, and it connects to the Bluelab Edenic app for historic tracking of your pH & conductivity readings.

What is the Edenic app? Why should I care?

Edenic is our mobile app that seamlessly captures your critical hydroponic data directly from your Bluelab device. Individual growers can now ditch the pen & paper when tracking a grow. Larger commercial operations can manage all grow data centrally.

I run a large commercial growing operation. What else should I know about Edenic?

For you, Edenic is a game changer. It provides a complete solution for managing your growing environment from on-site or afar. Consolidate data from multiple meters, set alarms for high & low readings, and record all historical data in one place.

Can I see pH and conductivity readings simultaneously?

Yes! The backlit screen shows pH & conductivity at the same time, unlike other pens that make you rotate different screens to see readings. The OnePen is packed with thoughtful touches like this, drawn from our own 30+ years of growing experience.

I sometimes see a white crust built up on the end of the pen. What is this?

This is very common in pH meters & is nothing to worry about. The storage solution used to hydrate your pen (and extend its longevity) is potassium salt, which sometimes dries as a white crust on your probe. Simply rinse this away under water.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

OnePen - a 3-in-1 Temperature, EC/PPM and pH Meter, Lightning Fast Readings - Bluetooth Data Sharing & in-App Tracking - Replaceable Probe

Product ID: 710376454

Details

Brand
Bluelab
Item dimensions L x W x H
8 x 7 x 20
Item weight
0.32 Kilograms
Number of items
1
Unit count
1.0 count

⚡Lightning-fast readings

💧IP68 waterproof & floats

📊Bluetooth data sync & tracking

₩625445

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Description

🌱 Grow smarter, not harder — the OnePen keeps you ahead of the curve!

PRO GRADE RELIABILITY - Backed by 30 years of Bluelab expertise, trusted by professional growers worldwide.
ERGONOMIC LUXURY IN HAND - Premium materials and high-contrast screen make testing comfortable and easy, even in low light.
SEAMLESS SMART MONITORING - Bluetooth sync with Edenic app lets you track, analyze, and share your grow data effortlessly.
BUILT TO BRAVE THE ELEMENTS - IP68-rated waterproof design with a floating probe means no more worries about spills or drops.
PRECISION AT YOUR FINGERTIPS - Accurate to ±0.01 for pH and EC/PPM ensures your plants get exactly what they need.

The Bluelab OnePen is a professional-grade 3-in-1 meter delivering ultra-fast, highly accurate pH, EC/PPM, and temperature readings. Featuring IP68 waterproof durability, a replaceable titanium electrode probe, and Bluetooth connectivity with the Edenic app, it streamlines data tracking and plant care. Designed for growers who demand precision and convenience, OnePen combines 30 years of expert engineering into a sleek, ergonomic tool that floats and withstands tough environments.

Specifications

ASIN	B0DF71QDNJ
Best Sellers Rank	27,150 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 51 in Lab pH Meters
Brand	Bluelab
Country Of Origin	New Zealand
Customer Reviews	3.8 3.8 out of 5 stars (73)
Included Components	Bluelab OnePen, 18ml Solution Sachets, Sensor Cleaning Brush, 2x AAA Batteries
Item Dimensions	8 x 7 x 20 centimetres
Item Weight	0.32 Kilograms
Manufacturer	bluelab
Manufacturer Part Number	PENONE
Model Number	ONEPEN
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1.0 count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₩625445

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews