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Bluelab pH Pen - Built for GrowersBluelab Corporation Limited

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bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White

Name: Amazon.com: bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White : Industrial & Scientific
Price: 109.99 USD
Availability: InStock
Rating: 4.4 (4518 reviews)

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4.4 4,518 ratings

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Purchase options and add-ons

Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment with lab quality glass probe; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing.Operating temperature : 0 - 50 °C, 32 - 122 °F.
This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; Calibration reminder; Durable design for repeated uses; Fully waterproof and floats in solutions
Double junction electrode has a longer lifespan compared to standard probes due to less contamination and is more accurate and reliable than comparable pens, test strips, drops, and more
Combine with ppm meters for full indoor garden nutrients monitoring in water and soil;
Fully waterproof - not just water resistant; Automatic temperature compensation for accurate readings everywhere
Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
IF PROBE IS DRY, SOAK IN KCL SOLUTION FOR 24 HOURS, KCL SOLUTION IS SOLD SEPARATELY; Made in New Zealand, and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1-Year Limited Warranty with proof of purchase

Customer ratings by feature

Easy to read

4.1

Water resistance

4.0

Easy to use

3.9

Accuracy

3.7

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bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in

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Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Certified |

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Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or

$19.98

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Product Description

Bluelab, pH Meter, Hydroponics, pH Pen Meter, Probe Care kit ph

Bluelab, Hydroponics, pH Meter, ph Pen, Double-Junction Electrode, Compact and Robust

Bluelab, Hydroponics, pH Meter, ph Pen, Durable Design, Waterproof, Performs fully underwater

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Product information

Product Dimensions

8 x 2.16 x 0.98 inches

Item Weight

4.3 ounces

Manufacturer

Bluelab Corporation Limited - Import (NZ)

ASIN

B005POOJHG

Item model number

PENPH

Batteries

1 AAA batteries required. (included)

Customer Reviews

4.4 4,518 ratings

4.4 out of 5 stars

Best Sellers Rank

#24,890 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#8 in Lab pH Meters
#48 in Soil Meters

Is Discontinued By Manufacturer

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Product Warranty: For warranty information about this product, please click here [PDF ]

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	This Item bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White	Recommendations AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools	dummy Bluelab TRUNV2 Truncheon Nutrient Meter, Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White	dummy Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display	dummy YINMIK Digital pH Tester for Soil, Soil pH Test Kit for Indoor Potted Plants, Professional pH Meter for Soil and Water, Measuring Soil pH for Garden, Grass,Lawn, Greenhouse,Outdoor,Farming, Yard Use	dummy Pool Salt Tester & PH Meter, Hofun Digital Salinity Meter and PH Tester for Pool Saltwater and Drinking Water, 5 in 1 Salinity PH Temp EC and TDS Meter Swimming Pool Hot Tub Spas, High Accuracy
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$109.99	$79.99	-25% $105.00 List: $140.00	$102.27	$46.99	-13% $39.99 List: $45.99
Delivery	Get it as soon as Tuesday, May 14	—	Get it as soon as Monday, May 20	Get it as soon as Wednesday, May 15	Get it as soon as Tuesday, May 14	Get it as soon as Wednesday, May 15
Customer Ratings	4.44,518	4.630	4.71,195	4.53,111	4.3251	4.42,496
Easy to read	4.1	—	4.8	4.5	4.4	4.5
Easy to use	3.9	—	4.8	4.3	4.1	4.5
Accuracy	3.7	—	4.7	4.3	4.1	4.1
Value for money	3.4	—	4.5	4.5	—	—
Sold By	Bluelab Store	AC Infinity	Amazon.com	Amazon.com	YINMIK	Hofun - Click, if you have any questions

Customer reviews

4.4 out of 5

4,518 global ratings

How customer reviews and ratings work

Customers say

Customers like the accuracy of the lab supply. They say it has a user friendly interface and accurate computing. They are also happy with the ease of use. However, some customers dislike the screen. Opinions are mixed on performance, quality, value, calibration, and waterproofness.

AI-generated from the text of customer reviews

110 customers mention88 positive22 negative

Customers like the accuracy of the lab supply. They say it's extremely accurate, has powerful computing, and a user friendly interface. They also say the pen seems accurate and provides quick, reliable readings. Customers also mention that the pen stays calibrated for longer with no drifts.

"...This pen is accurate and it’s awesome and requires very little effort to maintain and it has helped me take my growing to the next level...." Read more

"Easy to use, easy to calibrate and accurate. Lil on the expensive side but worth it. I found the customer service is top notch" Read more

"Very accurate and easy to use." Read more

"...This pen makes calibration easy, but for some reason (the math it does in the background?) it will not hold calibrations properly...." Read more

83 customers mention67 positive16 negative

Customers find the PH pen easy to use and calibrate. They say the directions are easy to read, accurate, and make the job much easier. Some say it requires very little effort to maintain.

"...This pen is accurate and it’s awesome and requires very little effort to maintain and it has helped me take my growing to the next level...." Read more

"Easy to use, easy to calibrate and accurate. Lil on the expensive side but worth it. I found the customer service is top notch" Read more

"Very accurate and easy to use." Read more

"...Easy to calibrate easy to use" Read more

207 customers mention143 positive64 negative

Customers are mixed about the performance of the lab supply. Some mention that it works great, while others say that it randomly stopped working and the end will dry out.

"...This pen is accurate and it’s awesome and requires very little effort to maintain and it has helped me take my growing to the next level...." Read more

"This PH pen worked perfectly for about a year. Then, I started getting readings from the meter from our tap water, which is about 9.2...." Read more

"Had issues with the pH solution to dial it in so thought it was broken...." Read more

"Good product overall." Read more

140 customers mention51 positive89 negative

Customers are mixed about the quality of the pH pen. Some mention it's made with the highest quality and workmanship, it'll last a year, and is reliable. However, others say that it broke in under 3 months, is fragile, and must be handled with care.

"...The pen is fragile and must be handled with care. It needs calibration, which is a really easy process...." Read more

"Made with the Highest Quality and Workmanship" Read more

"...’ve purchased through Amazon and both worked great initially then suddenly crashed...." Read more

"...Even after recalibration was inaccurate and couldnt be trusted anymore. Worked awesome for 8 months,Lame and disappointing" Read more

108 customers mention37 positive71 negative

Customers have mixed opinions about the value of the ph meter. Some find it to be the best meter for the money, while others say it's not worth the high price.

"...customers who have had the same experience, this thing is not worth the high price they ask for it...." Read more

"...Lil on the expensive side but worth it. I found the customer service is top notch" Read more

"...I think this thing is just fancy, but not particularly good...." Read more

"...Worked awesome for 8 months,Lame and disappointing" Read more

91 customers mention29 positive62 negative

Customers are mixed about the calibration of the pH meter. Some mention that it works great now and can be easily calibrated and measures the pH pen. It has automatic calibration and stays calibrated better than any pen they've ever used. However, others say that it wouldn't calibrate correctly and kept giving errors.

"...The pen is fragile and must be handled with care. It needs calibration, which is a really easy process...." Read more

"...spending big money on a "lab" PH device, only to find out it won't calibrate...." Read more

"Easy to use, easy to calibrate and accurate. Lil on the expensive side but worth it. I found the customer service is top notch" Read more

"...You cannot simply pull it out and calibrate. You must soak it in the solution for 24 hours and then calibrate...." Read more

25 customers mention14 positive11 negative

Customers have mixed opinions about the waterproofness of the lab supply. Some mention that it's precise, easy to use, and accurate. They say that the probe must be kept wet at all times. Others however, say that it was not 100% waterproof, and that the screws were not tight.

"Love it for it's durability and total waterproof design, but I'll admit, the past PH meters had 2 Decibels which makes it easier to pinpoint your..." Read more

"...the calibration solutions included with the pen come in cheap, waterproof envelopes that can be neither resealed or used to hold the liquids for any..." Read more

"...This pen being totally water proof , an indicator showing that calibation is %100 and when it gets out of whack it is an easy 30 second process..." Read more

"...Not only does it have a sponge inside to keep the the sensor wet, but it also has a lanyard on it, which makes it nearly impossible to forget to..." Read more

22 customers mention0 positive22 negative

Customers are dissatisfied with the screen of the lab supply. They mention that it malfunctions and becomes unreadable after a month of use.

"Randomly stopped working. Display screen showed as pictured which was not listed in the error messages page, I thought it was the battery...." Read more

"First meter I bought-The screen went out within a month. They sent me a replacement meter but I’m already having issues with it too...." Read more

"...to calibrate and keeps giving me error replaced battery and now screen is unreadable because of this i cant reccomend this product didnt even last a..." Read more

"...after Rinsing and calibrating the pen with what was provided it doesn’t read accurately like my blue pens I’ve had in the past...." Read more

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Tony

I love it!

Reviewed in the United States on April 30, 2023

Style: PH PenVerified Purchase

First let me say DO NOT be discouraged from the one star reviews. I can understand someone being upset if they buy a new pen and get one that’s broken but if that’s the case none of us would ever own anything. It is absolutely impossible to buy anything that doesn’t have a bad review because of something that in many cases that has absolutely nothing to do with how the product works, go look up anything you own and love and someone had an issue, seriously go look and see, I’ve tried it there is nothing I’ve found that everyone loves. This pen is awesome if you are a grower and ph is vital and you want to be a next level grower. I’ve had mine 2 years and when it stops working I will immediately get another one. It does take a small bit of little effort to add a few drops of storage solution that you have to buy extra but that last a long time and it’s worth it to me. You add it after each use to keep it hydrated. If it dries out the pen is not ruined like some say but you might have to recalibrate which is easy after your first few times, especially with the step by step YouTube videos available to watch while you’re doing it. Just remember there are a lot of lazy incompetent people out there that all they want to do is push a button and be done with it and expect everything to be instant and do nothing else. It all comes down to how important ph means to you and it is very important to me. This pen is accurate and it’s awesome and requires very little effort to maintain and it has helped me take my growing to the next level. It also works great with my pool to, way better than those test strips they have that do work but not quite as accurate as this ph pen. Thousands of top growers use this pen and depend on it, you see them on YouTube all the time using it. I happened to run across the reviews looking for something else and wanted to see what the hater’s were saying and now that I’ve used the Bluelab pen a couple of years I felt I could give a genuine review based on my experience with it. So, now it’s up to you to decide. Good luck!

55 people found this helpful

Helpful

Jason Milne

Nice

Reviewed in the United States on April 19, 2024

Style: PH PenVerified Purchase

Easy to use, easy to calibrate and accurate. Lil on the expensive side but worth it. I found the customer service is top notch

Helpful

David

Best out there!

Reviewed in the United States on April 12, 2024

Style: PH PEN + CARE KIT PHVerified Purchase

I will never buy any other brand. The quality and accuracy far surpasses the cheap ones. When it come to your plants why risk it? Just buy blue labs, most reliable imo

One person found this helpful

Helpful

Peter Lieber

Great product

Reviewed in the United States on April 1, 2024

Style: PH PEN + CARE KIT PHVerified Purchase

Very accurate and easy to use.

Helpful

Mike Schmidt

Great digital pH meter

Reviewed in the United States on December 8, 2021

Style: PH PenVerified Purchase

Although I bought this pH meter for my wife for hydroponics, she decided to donate it to me for aquarium purposes - she's continuing to use a much cheaper unit for now. It is CRAZY that aquarists use chemical test strips or vial/drop test kits to measure pH rather than use one of these! Tropical fish stores should be selling these routinely!!! Unlike the cheap pH pen we used before, this one only displays to 1 decimal place - which makes sense. To get an accurate reading, it's definitely necessary to swirl around the pen gently for long enough to get a stabilized reading. The pen is fragile and must be handled with care. It needs calibration, which is a really easy process. It needs to be kept moist, which is also not difficult - especially if using it routinely. Definitely two thumbs up - we don't know of anything better.

Helpful

Deric Frisbie

Read the Instructions

Reviewed in the United States on March 13, 2024

Style: PH PEN + CARE KIT PHVerified Purchase

I was a little hesitant to purchase even though I've had really good luck with this company based on the reviews. Like I've heard so many times in life, common is not so common. If you purchase this item, please read the instructions. You cannot simply pull it out and calibrate. You must soak it in the solution for 24 hours and then calibrate.
Do not go cheap unless you are okay with mediocracy.

2 people found this helpful

Helpful

Catch22STL

Worked Great For a Year - Now Won't Calibrate

Reviewed in the United States on February 15, 2024

Style: PH PenVerified Purchase

This PH pen worked perfectly for about a year. Then, I started getting readings from the meter from our tap water, which is about 9.2. Meter shows 3.7 with out tap water. Watched the Blue Lab calibration video, followed it to a T, but no luck. I bought the pen, bought the calibration pen, and the first time I tried to calibrate this guy, she's stuck on 3.3 or sometimes 8.7. We do not appreciate spending big money on a "lab" PH device, only to find out it won't calibrate. Like the other One and Two star customers who have had the same experience, this thing is not worth the high price they ask for it. Soaked in KCL solution, and we've kept the tip clean and soaking in KCL since we bought it. One Star for the Blue "Lab" Pen that is not a laboratory-quality device. #LessonLearned

2 people found this helpful

Helpful

Daniel Southwell

Blue labs PH pen

Reviewed in the United States on April 29, 2024

Style: PH PenVerified Purchase

An important tool for growing anything that thrives in a different PH. Easy to calibrate easy to use

Helpful

Top reviews from other countries

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Rob Dee

Works awesome

Reviewed in Canada on January 1, 2024

Style: PH PenVerified Purchase

This is a very reliable and accurate tool to have for my indoor kratky plants. It's bang on everything. Bluelab definitely know what they are doing.

Joshua Marquéz

El mejor medidor de PH

Reviewed in Mexico on September 19, 2022

Style: PH PenVerified Purchase

Me gusto, es fácil de calibrar.
Te avisa cuando se necesita calibrar, lo único difícil es conseguir el humectador de sonda.

Pero de ahí en más es un gran aparato.🤘🏼

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liam curtis

ph pen

Reviewed in Spain on March 22, 2024

Style: PH PenVerified Purchase

all the years ive have used ph pens their not worth the money!! blue lab hands down is the best on the market, so far so good it works perfect!!!

Philipp Dietrich

Großartiges Produkt einer ökologisch denkenden Firma

Reviewed in Germany on March 7, 2024

Style: PH PenVerified Purchase

Das Produkt funktioniert einwandfrei. Mir hat es die umweltfreundliche Verpackung besonders angetan, kein unnötiges Material verwendet. Alle Infos inklusive Anleitung wurden innen und außen auf die Packung gedruckt. Stark!

One person found this helpful

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Stefano

Comoda

Reviewed in Italy on November 7, 2023

Style: PH PenVerified Purchase

Comoda e precisa

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