Why should I choose the Bluelab pH pen over others?

The probe quality. Highly accurate, compensates for temp & is fast to a stable reading. It's a double junction probe, so it's durable. And it's full of thoughtful touches (the ring on top, the storage cap, the calibration indicator to name a few).

Other pens come with a hard carry case & calibration solutions in plastic bottles. Yours does not. Why is that?

Great question. We have made the deliberate choice to make our packaging as sustainable as possible. To that end, our packaging is all fully recyclable, with no hard plastics or styrofoam inserts.

How does Bluelab make calibration super easy?

Calibrating is an easy & fast process! Each pen includes calibration solutions & clear instructions. A check mark appears when the pen is calibrated. When the pen loses calibration, the check mark disappears, informing you it's time to recalibrate.

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.

Can I use the pH Pen to measure the pH of tap water, distilled water, or reverse-osmosis water?

No. For distilled & RO water there aren't enough dissolved ions (salts) for a stable pH reading. For tap water, w/o sufficient dissolved minerals, the answer is also no. Adding a few drops of KCL storage solution may work to enable a stable reading.

Bluelab Ph Pen 0 1 Ph Accurate Durable Double Junction

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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COP 638880

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

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Description

🌿 Master your environment with pinpoint pH precision — because your growth deserves the best.

PRECISION THAT POWERS GROWTH - Achieve nutrient-perfect pH control with ±0.1 accuracy for thriving crops and crystal-clear water.
BUILT TO BRAVE ANY ENVIRONMENT - Waterproof, shock-resistant, and buoyant design means your pH pen stays safe and ready—indoors or outdoors.
DESIGNED FOR THE ON THE GO PRO - Auto-off, low battery alert, temperature units in °C/°F, plus a handy lanyard for seamless, hands-free use.
SMART CALIBRATION ZERO HASSLE - Two-point calibration with included sachets and a 30-day reminder keeps your readings sharp and reliable.
DOUBLE JUNCTION PROBE FOR LONGEVITY - Minimizes contamination and extends probe life, delivering consistent, trustworthy measurements every time.

The Bluelab pH Pen is a professional-grade, waterproof pH meter featuring ±0.1 accuracy and a durable double-junction probe for contamination resistance and extended lifespan. It offers automatic temperature compensation, easy two-point calibration with included solutions, and a floating design for use in water-based media. Ideal for hydroponics, aquariums, pools, and soil testing, this New Zealand-made device combines rugged durability with smart features like auto-off, low battery indicator, and a lanyard for hands-free convenience.

Specifications

ASIN	B005POOJHG
Best Sellers Rank	#10,034 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Lab pH Meters #40 in Soil Meters
Brand Name	Bluelab
Customer Reviews	4.4 4.4 out of 5 stars (4,779)
Global Trade Identification Number	09421024920234
Item Dimensions	8 x 2.16 x 0.98 inches
Item Weight	4.32 ounces
Manufacturer	Bluelab
Material Type	Glass
Model	pH Pen
Part Number	PENPH
UPC	706842510010 715706332132
Unit Count	1 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.

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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.

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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.

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

2 months ago

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Customer service was outstanding when I had questions about the product.

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COP 638880

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

View all Trustpilot reviews

Bluelab pH Pen - ± 0.1 pH Accurate - Durable Double Junction Probe

Details

Details

Description

Specifications

Common Questions